Investment Risks - Ivy Variable Insurance Portfolios Classes - Standard and Service	Dec. 31, 2025
Nomura VIP Core Equity Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Core Equity Series \| Industry and sector risk
Prospectus [Line Items]
Risk [Text Block]	Industry and sector risk — The risk that the value of securities in a particular industry or sector (such as information technology) will decline because of changing expectations for the performance of that industry or sector.
Nomura VIP Core Equity Series \| Value stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Value stock risk — The risk that the value of a security believed by the Manager to be undervalued may never reach what is believed to be its full value; such security’s value may decrease or such security may be appropriately priced. Value stocks are stocks of companies that may have experienced adverse business or industry developments or may be subject to special risks that have caused the stocks to be out of favor and, in the opinion of the Manager, undervalued.
Nomura VIP Core Equity Series \| Information technology sector risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Information technology sector risk — The risk that investment risks associated with investing in the information technology sector, in addition to other risks, include the intense competition to which information technology companies may be subject; the dramatic and often unpredictable changes in growth rates and competition for qualified personnel among information technology companies; effects on profitability from being heavily dependent on patent and intellectual property rights and the loss or impairment of those rights; obsolescence of existing technology; general economic conditions; and government regulation.
Nomura VIP Core Equity Series \| Growth stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Growth stock risk — Growth stocks reflect projections of future earnings and revenue. These prices may rise or fall dramatically depending on whether those projections are met. These companies’ stock prices may be more volatile, particularly over the short term.
Nomura VIP Core Equity Series \| Limited number of securities risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Limited number of securities risk — The possibility that a single security’s increase or decrease in value may have a greater impact on a series’ value and total return because the series may hold larger positions in fewer securities than other series. In addition, a series that holds a limited number of securities may be more volatile than those series that hold a greater number of securities.
Nomura VIP Core Equity Series \| Large-capitalization company risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large-capitalization company risk — Large-capitalization companies tend to be less volatile than companies with smaller market capitalizations. This potentially lower risk means that the Series’ share price may not rise as much as the share prices of funds that focus on smaller-capitalization companies.
Nomura VIP Core Equity Series \| Redemption risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Redemption risk — If investors redeem more shares of a series than are purchased for an extended period of time, a series may be required to sell securities without regard to the investment merits of such actions. This could decrease a series’ asset base, potentially resulting in a higher expense ratio.
Nomura VIP Core Equity Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP Core Equity Series \| Foreign Risk
Prospectus [Line Items]
Risk [Text Block]	Foreign risk — The risk that investments in foreign securities (particularly those of issuers in emerging markets) may be adversely affected by political instability, changes in currency exchange rates, inefficient markets and higher transaction costs, foreign economic conditions, the imposition of economic or trade sanctions, or inadequate or different regulatory and accounting standards.
Nomura VIP Core Equity Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Core Equity Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Growth Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Growth Series \| Risk Nondiversified Status [Member]
Prospectus [Line Items]
Risk [Text Block]	Nondiversification risk — A nondiversified series has the flexibility to invest as much as 50% of its assets in as few as two issuers with no single issuer accounting for more than 25% of the series. The remaining 50% of its assets must be diversified so that no more than 5% of its assets are invested in the securities of a single issuer. Because a nondiversified series may invest its assets in fewer issuers, the value of its shares may increase or decrease more rapidly than if it were fully diversified.
Nomura VIP Growth Series \| Government and Regulatory Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Government and regulatory risk — The risk that governments or regulatory authorities may take actions that could adversely affect various sectors of the securities markets and affect series performance.
Nomura VIP Growth Series \| Industry and sector risk
Prospectus [Line Items]
Risk [Text Block]	Industry and sector risk — The risk that the value of securities in a particular industry or sector (such as information technology) will decline because of changing expectations for the performance of that industry or sector.
Nomura VIP Growth Series \| Information technology sector risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Information technology sector risk — The risk that investment risks associated with investing in the information technology sector, in addition to other risks, include the intense competition to which information technology companies may be subject; the dramatic and often unpredictable changes in growth rates and competition for qualified personnel among information technology companies; effects on profitability from being heavily dependent on patent and intellectual property rights and the loss or impairment of those rights; obsolescence of existing technology; general economic conditions; and government regulation.
Nomura VIP Growth Series \| Growth stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Growth stock risk — Growth stocks reflect projections of future earnings and revenue. These prices may rise or fall dramatically depending on whether those projections are met. These companies’ stock prices may be more volatile, particularly over the short term.
Nomura VIP Growth Series \| Limited number of securities risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Limited number of securities risk — The possibility that a single security’s increase or decrease in value may have a greater impact on a series’ value and total return because the series may hold larger positions in fewer securities than other series. In addition, a series that holds a limited number of securities may be more volatile than those series that hold a greater number of securities.
Nomura VIP Growth Series \| Large-capitalization company risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large-capitalization company risk — Large-capitalization companies tend to be less volatile than companies with smaller market capitalizations. This potentially lower risk means that the Series’ share price may not rise as much as the share prices of funds that focus on smaller-capitalization companies.
Nomura VIP Growth Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP Growth Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Growth Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Mid Cap Growth Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Mid Cap Growth Series \| Healthcare sector risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Healthcare sector risk — The risk that the value of a series’ shares will be affected by factors particular to the healthcare and related sectors (such as government regulation) and may fluctuate more widely than that of a series that invests in a broad range of sectors.
Nomura VIP Mid Cap Growth Series \| Industry and sector risk
Prospectus [Line Items]
Risk [Text Block]	Industry and sector risk — The risk that the value of securities in a particular industry or sector (such as information technology, consumer discretionary, health care, or industrials) will decline because of changing expectations for the performance of that industry or sector.
Nomura VIP Mid Cap Growth Series \| Information technology sector risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Information technology sector risk — The risk that investment risks associated with investing in the information technology sector, in addition to other risks, include the intense competition to which information technology companies may be subject; the dramatic and often unpredictable changes in growth rates and competition for qualified personnel among information technology companies; effects on profitability from being heavily dependent on patent and intellectual property rights and the loss or impairment of those rights; obsolescence of existing technology; general economic conditions; and government regulation.
Nomura VIP Mid Cap Growth Series \| Growth stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Growth stock risk — Growth stocks reflect projections of future earnings and revenue. These prices may rise or fall dramatically depending on whether those projections are met. These companies’ stock prices may be more volatile, particularly over the short term.
Nomura VIP Mid Cap Growth Series \| Company size risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Company size risk — The risk that investments in small- and/or medium-sized companies may be more volatile than those of larger companies because of limited financial resources or dependence on narrow product lines.
Nomura VIP Mid Cap Growth Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP Mid Cap Growth Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Mid Cap Growth Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Smid Cap Core Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Smid Cap Core Series \| Industrials sector risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Industrials sector risk — The risk that the value of a series’ shares will be affected by factors particular to the industrials and related sectors (such as government regulation) and may fluctuate more widely than that of a series that invests in a broad range of sectors.
Nomura VIP Smid Cap Core Series \| Government and Regulatory Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Government and regulatory risk — The risk that governments or regulatory authorities may take actions that could adversely affect various sectors of the securities markets and affect series performance.
Nomura VIP Smid Cap Core Series \| Interest rate risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Interest rate risk — The risk that securities will decrease in value if interest rates rise. The risk is generally associated with bonds; however, because small- and medium-sized companies and companies in the real estate sector often borrow money to finance their operations, they may be adversely affected by rising interest rates. A series may be subject to a greater risk of rising interest rates when interest rates are low or inflation rates are high or rising.
Nomura VIP Smid Cap Core Series \| Industry and sector risk
Prospectus [Line Items]
Risk [Text Block]	Industry and sector risk — The risk that the value of securities in a particular industry or sector (such as industrials) will decline because of changing expectations for the performance of that industry or sector.
Nomura VIP Smid Cap Core Series \| Company size risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Company size risk — The risk that investments in small- and/or medium-sized companies may be more volatile than those of larger companies because of limited financial resources or dependence on narrow product lines.
Nomura VIP Smid Cap Core Series \| Redemption risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Redemption risk — If investors redeem more shares of a series than are purchased for an extended period of time, a series may be required to sell securities without regard to the investment merits of such actions. This could decrease a series’ asset base, potentially resulting in a higher expense ratio.
Nomura VIP Smid Cap Core Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP Smid Cap Core Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Smid Cap Core Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Small Cap Growth Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Small Cap Growth Series \| Healthcare sector risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Healthcare sector risk — The risk that the value of a series’ shares will be affected by factors particular to the healthcare and related sectors (such as government regulation) and may fluctuate more widely than that of a series that invests in a broad range of sectors.
Nomura VIP Small Cap Growth Series \| Initial public offering (IPO) risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Initial public offering (IPO) risk — The risk that any positive effect of investments in IPOs may not be sustainable because of a number of factors. Namely, a series may not be able to buy shares in some IPOs, or may be able to buy only a small number of shares. Also, the performance of IPOs generally is volatile, and is dependent on market psychology and economic conditions. To the extent that IPOs have a significant positive impact on a series’ performance, this may not be able to be replicated in the future. The relative performance impact of IPOs also is likely to decline as a series grows.
Nomura VIP Small Cap Growth Series \| Industry and sector risk
Prospectus [Line Items]
Risk [Text Block]	Industry and sector risk — The risk that the value of securities in a particular industry or sector (such as information technology or healthcare) will decline because of changing expectations for the performance of that industry or sector.
Nomura VIP Small Cap Growth Series \| Information technology sector risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Information technology sector risk — The risk that investment risks associated with investing in the information technology sector, in addition to other risks, include the intense competition to which information technology companies may be subject; the dramatic and often unpredictable changes in growth rates and competition for qualified personnel among information technology companies; effects on profitability from being heavily dependent on patent and intellectual property rights and the loss or impairment of those rights; obsolescence of existing technology; general economic conditions; and government regulation.
Nomura VIP Small Cap Growth Series \| Growth stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Growth stock risk — Growth stocks reflect projections of future earnings and revenue. These prices may rise or fall dramatically depending on whether those projections are met. These companies’ stock prices may be more volatile, particularly over the short term.
Nomura VIP Small Cap Growth Series \| Company size risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Company size risk — The risk that investments in small- and/or medium-sized companies may be more volatile than those of larger companies because of limited financial resources or dependence on narrow product lines.
Nomura VIP Small Cap Growth Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP Small Cap Growth Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Small Cap Growth Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Value Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Value Series \| Government and Regulatory Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Government and regulatory risk — The risk that governments or regulatory authorities may take actions that could adversely affect various sectors of the securities markets and affect series performance.
Nomura VIP Value Series \| Industry and sector risk
Prospectus [Line Items]
Risk [Text Block]	Industry and sector risk — The risk that the value of securities in a particular industry or sector (such as financial services) will decline because of changing expectations for the performance of that industry or sector.
Nomura VIP Value Series \| Value stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Value stock risk — The risk that the value of a security believed by the Manager to be undervalued may never reach what is believed to be its full value; such security’s value may decrease or such security may be appropriately priced. Value stocks are stocks of companies that may have experienced adverse business or industry developments or may be subject to special risks that have caused the stocks to be out of favor and, in the opinion of the Manager, undervalued.
Nomura VIP Value Series \| Limited number of securities risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Limited number of securities risk — The possibility that a single security’s increase or decrease in value may have a greater impact on a series’ value and total return because the series may hold larger positions in fewer securities than other series. In addition, a series that holds a limited number of securities may be more volatile than those series that hold a greater number of securities.
Nomura VIP Value Series \| Large-capitalization company risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large-capitalization company risk — Large-capitalization companies tend to be less volatile than companies with smaller market capitalizations. This potentially lower risk means that the Series’ share price may not rise as much as the share prices of funds that focus on smaller-capitalization companies.
Nomura VIP Value Series \| Redemption risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Redemption risk — If investors redeem more shares of a series than are purchased for an extended period of time, a series may be required to sell securities without regard to the investment merits of such actions. This could decrease a series’ asset base, potentially resulting in a higher expense ratio.
Nomura VIP Value Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP Value Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Value Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Corporate Bond Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Corporate Bond Series \| Government and Regulatory Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Government and regulatory risk — The risk that governments or regulatory authorities may take actions that could adversely affect various sectors of the securities markets and affect series performance.
Nomura VIP Corporate Bond Series \| Credit risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Credit risk — The risk that an issuer of a debt security, including a governmental issuer or an entity that insures a bond, may be unable to make interest payments and/or repay principal in a timely manner.
Nomura VIP Corporate Bond Series \| Interest rate risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Interest rate risk — The risk that the prices of bonds and other fixed income securities will increase as interest rates fall and decrease as interest rates rise. Interest rate changes are influenced by a number of factors, such as government policy, monetary policy, inflation expectations, and the supply and demand of bonds. Bonds and other fixed income securities with longer maturities or duration generally are more sensitive to interest rate changes. A series may be subject to a greater risk of rising interest rates when interest rates are low or inflation rates are high or rising.
Nomura VIP Corporate Bond Series \| High Yield (Junk) Bond Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	High yield (junk) bond risk — The risk that high yield securities, commonly known as “junk bonds,” are subject to reduced creditworthiness of issuers, increased risk of default, and a more limited and less liquid secondary market. High yield securities may also be subject to greater price volatility and risk of loss of income and principal than are higher-rated securities.
Nomura VIP Corporate Bond Series \| Industry and sector risk
Prospectus [Line Items]
Risk [Text Block]	Industry and sector risk — The risk that the value of securities in a particular industry or sector (such as banking) will decline because of changing expectations for the performance of that industry or sector.
Nomura VIP Corporate Bond Series \| Redemption risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Redemption risk — If investors redeem more shares of a series than are purchased for an extended period of time, a series may be required to sell securities without regard to the investment merits of such actions. This could decrease a series’ asset base, potentially resulting in a higher expense ratio.
Nomura VIP Corporate Bond Series \| Foreign Risk
Prospectus [Line Items]
Risk [Text Block]	Foreign risk — The risk that investments in foreign securities (particularly those of issuers in emerging markets) may be adversely affected by political instability, changes in currency exchange rates, inefficient markets and higher transaction costs, foreign economic conditions, the imposition of economic or trade sanctions, or inadequate or different regulatory and accounting standards.
Nomura VIP Corporate Bond Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Corporate Bond Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP High Income Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP High Income Series \| Restricted securities risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Restricted securities risk — The risk that restricted securities are subject to legal or contractual restrictions on resale and there can be no assurance of a ready market for resale. These securities include private placements or other unregistered securities, such as “Rule 144A Securities”, which are securities that may be sold only to qualified institutional buyers pursuant to the Securities Act of 1933, as amended (1933 Act). Privately placed securities, Rule 144A securities and other restricted securities may have the effect of increasing the level of series illiquidity to the extent a series finds it difficult to sell these securities when the Manager believes it is desirable to do so, especially under adverse market or economic conditions or in the event of adverse changes in the financial condition of the issuer, and the prices realized could be less than those originally paid, or less than the fair market value. At times, the illiquidity of the market, as well as the lack of publicly available information regarding these securities also may make it difficult to determine the fair market value of such securities for purposes of computing the NAV of a series.
Nomura VIP High Income Series \| New issue risk [Member]
Prospectus [Line Items]
Risk [Text Block]	New issue risk — New issues may have limited markets, making valuation and selling difficult. The market value of newly issued securities may fluctuate considerably.
Nomura VIP High Income Series \| Distressed securities risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Distressed securities risk — The market for distressed securities and instruments is generally thinner and less active than other markets, which can adversely affect the prices at which distressed securities can be sold.
Nomura VIP High Income Series \| Deferred payment securities risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Deferred payment securities risk — These securities may be subject to greater price fluctuations when interest rates change than securities that currently pay interest. During the time that interest payments are not being made on these securities, holders are deemed to receive income annually, even though cash is not received.
Nomura VIP High Income Series \| Payment-in-kind securities risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Payment-in-kind securities risk — Payment-in-kind securities defer cash interest payments by treating them as additional principal. This results in higher total debt and the potential for increased default risk of the issuer.
Nomura VIP High Income Series \| Prepayment Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Prepayment risk — The risk that the principal on a bond that is held by a series will be prepaid prior to maturity at a time when interest rates are lower than what that bond was paying. A series may then have to reinvest that money at a lower interest rate.
Nomura VIP High Income Series \| Loans and Other Direct Indebtedness Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Loans and other direct indebtedness risk — The risk that a series will not receive payment of principal, interest, and other amounts due in connection with these investments and will depend primarily on the financial condition of the borrower and the lending institution. A series’ ability to sell its loans or to realize their full value upon sale may also be impaired due to the lack of an active trading market, irregular trading activity, wide bid/ask spreads, contractual restrictions, and extended trade settlement periods. In addition, certain loans in which a series invests may not be considered securities. A series therefore may not be able to rely upon the anti-fraud provisions of the federal securities laws with respect to these investments.
Nomura VIP High Income Series \| Subsidiary risk
Prospectus [Line Items]
Risk [Text Block]	Subsidiary risk — The Subsidiary is not registered, nor subject to the investor protections, under the Investment Company Act of 1940 (1940 Act), and does not benefit from all the investor protections that apply to 1940 Act-registered funds. Changes in applicable tax laws could result in the inability of the Series and/or the Subsidiary to operate as described herein, which could adversely affect the Series and its shareholders.
Nomura VIP High Income Series \| Credit risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Credit risk — The risk that an issuer of a debt security, including a governmental issuer or an entity that insures a bond, may be unable to make interest payments and/or repay principal in a timely manner.
Nomura VIP High Income Series \| Interest rate risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Interest rate risk — The risk that the prices of bonds and other fixed income securities will increase as interest rates fall and decrease as interest rates rise. Interest rate changes are influenced by a number of factors, such as government policy, monetary policy, inflation expectations, and the supply and demand of bonds. Bonds and other fixed income securities with longer maturities or duration generally are more sensitive to interest rate changes. A series may be subject to a greater risk of rising interest rates when interest rates are low or inflation rates are high or rising.
Nomura VIP High Income Series \| High Yield (Junk) Bond Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	High yield (junk) bond risk — The risk that high yield securities, commonly known as “junk bonds,” are subject to reduced creditworthiness of issuers, increased risk of default, and a more limited and less liquid secondary market. High yield securities may also be subject to greater price volatility and risk of loss of income and principal than are higher-rated securities.
Nomura VIP High Income Series \| Currency Risk
Prospectus [Line Items]
Risk [Text Block]	Currency risk — The risk that fluctuations in exchange rates between the US dollar and foreign currencies and between various foreign currencies may cause the value of an investment to decline.
Nomura VIP High Income Series \| Redemption risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Redemption risk — If investors redeem more shares of a series than are purchased for an extended period of time, a series may be required to sell securities without regard to the investment merits of such actions. This could decrease a series’ asset base, potentially resulting in a higher expense ratio.
Nomura VIP High Income Series \| Foreign Risk
Prospectus [Line Items]
Risk [Text Block]	Foreign risk — The risk that investments in foreign securities (particularly those of issuers in emerging markets) may be adversely affected by political instability, changes in currency exchange rates, inefficient markets and higher transaction costs, foreign economic conditions, the imposition of economic or trade sanctions, or inadequate or different regulatory and accounting standards.
Nomura VIP High Income Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP High Income Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Limited-Term Bond Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Limited-Term Bond Series \| Prepayment Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Prepayment risk — The risk that the principal on a bond that is held by a series will be prepaid prior to maturity at a time when interest rates are lower than what that bond was paying. A series may then have to reinvest that money at a lower interest rate.
Nomura VIP Limited-Term Bond Series \| Portfolio Turnover Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Portfolio turnover risk — High portfolio turnover rates may increase a series’ transaction costs and lower returns.
Nomura VIP Limited-Term Bond Series \| Credit risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Credit risk — The risk that an issuer of a debt security, including a governmental issuer or an entity that insures a bond, may be unable to make interest payments and/or repay principal in a timely manner.
Nomura VIP Limited-Term Bond Series \| Interest rate risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Interest rate risk — The risk that the prices of bonds and other fixed income securities will increase as interest rates fall and decrease as interest rates rise. Interest rate changes are influenced by a number of factors, such as government policy, monetary policy, inflation expectations, and the supply and demand of bonds. Bonds and other fixed income securities with longer maturities or duration generally are more sensitive to interest rate changes. A series may be subject to a greater risk of rising interest rates when interest rates are low or inflation rates are high or rising.
Nomura VIP Limited-Term Bond Series \| Mortgage-Backed and Asset-Backed Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Mortgage-backed and asset-backed securities risk — Mortgage-backed and asset-backed securities, like other fixed income securities, are subject to credit risk and interest rate risk, and may also be subject to prepayment risk and extension risk. Prepayment risk is the risk that the principal on mortgage-backed or asset-backed securities may be prepaid at any time, which will reduce the yield and market value of the securities and may cause the series to reinvest the proceeds in lower yielding securities. Extension risk is the risk that principal on mortgage-backed or asset-backed securities will be repaid more slowly than expected, which may reduce the proceeds available for reinvestment in higher yielding securities. In addition, mortgage-backed and asset-backed securities may decline in value, become more volatile, face difficulties in valuation, or experience reduced liquidity due to changes in interest rates or general economic conditions. Certain mortgage-backed or asset-backed securities, such as collateralized mortgage obligations, real estate mortgage investment conduits, and stripped mortgage-backed securities, may be more susceptible to these risks than other mortgage-backed, asset-backed, or fixed-income securities.
Nomura VIP Limited-Term Bond Series \| US Government Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	US government securities risk — The risk that certain US government securities, such as securities issued by Fannie Mae, Freddie Mac and the Federal Home Loan Bank system (FHLB), are not backed by the “faith and credit” of the US government and, instead, may be supported only by the credit of the issuer or by the right of the issuer to borrow from the US Treasury.
Nomura VIP Limited-Term Bond Series \| Redemption risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Redemption risk — If investors redeem more shares of a series than are purchased for an extended period of time, a series may be required to sell securities without regard to the investment merits of such actions. This could decrease a series’ asset base, potentially resulting in a higher expense ratio.
Nomura VIP Limited-Term Bond Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Limited-Term Bond Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Global Growth Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Global Growth Series \| Industry and sector risk
Prospectus [Line Items]
Risk [Text Block]	Industry and sector risk — The risk that the value of securities in a particular industry or sector (such as information technology) will decline because of changing expectations for the performance of that industry or sector.
Nomura VIP Global Growth Series \| Currency risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Currency risk — The risk that fluctuations in exchange rates between the US dollar and foreign currencies and between various foreign currencies may cause the value of an investment to decline.
Nomura VIP Global Growth Series \| Information technology sector risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Information technology sector risk — The risk that investment risks associated with investing in the information technology sector, in addition to other risks, include the intense competition to which information technology companies may be subject; the dramatic and often unpredictable changes in growth rates and competition for qualified personnel among information technology companies; effects on profitability from being heavily dependent on patent and intellectual property rights and the loss or impairment of those rights; obsolescence of existing technology; general economic conditions; and government regulation.
Nomura VIP Global Growth Series \| Growth stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Growth stock risk — Growth stocks reflect projections of future earnings and revenue. These prices may rise or fall dramatically depending on whether those projections are met. These companies’ stock prices may be more volatile, particularly over the short term.
Nomura VIP Global Growth Series \| Limited number of securities risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Limited number of securities risk — The possibility that a single security’s increase or decrease in value may have a greater impact on a series’ value and total return because the series may hold larger positions in fewer securities than other series. In addition, a series that holds a limited number of securities may be more volatile than those series that hold a greater number of securities.
Nomura VIP Global Growth Series \| Foreign and Emerging Markets Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Foreign and emerging markets risk — The risk that investments in foreign securities (particularly those of issuers in emerging markets) may be adversely affected by political instability; changes in currency exchange rates; inefficient markets and higher transaction costs; foreign economic conditions; the imposition of economic or trade sanctions; or inadequate or different regulatory and accounting standards. Securities of issuers in emerging markets may be subject to greater risks than securities of issuers in more developed foreign markets because, among other things, emerging markets may have less stable political and economic environments. In addition, there often is substantially less publicly available information about issuers and such information tends to be of a lesser quality. Economic markets and structures tend to be less mature and diverse and the securities markets may also be smaller, less liquid, and subject to greater price volatility.
Nomura VIP Global Growth Series \| Large-capitalization company risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large-capitalization company risk — Large-capitalization companies tend to be less volatile than companies with smaller market capitalizations. This potentially lower risk means that the Series’ share price may not rise as much as the share prices of funds that focus on smaller-capitalization companies.
Nomura VIP Global Growth Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP Global Growth Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Global Growth Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP International Core Equity Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP International Core Equity Series \| Geographic Focus Risk
Prospectus [Line Items]
Risk [Text Block]	Geographic focus risk — The risk that local political and economic conditions could adversely affect the performance of a series investing a substantial amount of assets in securities of issuers located in a single country or a limited number of countries.
Nomura VIP International Core Equity Series \| Value stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Value stock risk — The risk that the value of a security believed by the Manager to be undervalued may never reach what is believed to be its full value; such security’s value may decrease or such security may be appropriately priced. Value stocks are stocks of companies that may have experienced adverse business or industry developments or may be subject to special risks that have caused the stocks to be out of favor and, in the opinion of the Manager, undervalued.
Nomura VIP International Core Equity Series \| Currency risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Currency risk — The risk that fluctuations in exchange rates between the US dollar and foreign currencies and between various foreign currencies may cause the value of an investment to decline.
Nomura VIP International Core Equity Series \| Growth stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Growth stock risk — Growth stocks reflect projections of future earnings and revenue. These prices may rise or fall dramatically depending on whether those projections are met. These companies’ stock prices may be more volatile, particularly over the short term.
Nomura VIP International Core Equity Series \| Limited number of securities risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Limited number of securities risk — The possibility that a single security’s increase or decrease in value may have a greater impact on a series’ value and total return because the series may hold larger positions in fewer securities than other series. In addition, a series that holds a limited number of securities may be more volatile than those series that hold a greater number of securities.
Nomura VIP International Core Equity Series \| Foreign and Emerging Markets Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Foreign and emerging markets risk — The risk that investments in foreign securities (particularly those of issuers in emerging markets) may be adversely affected by political instability; changes in currency exchange rates; inefficient markets and higher transaction costs; foreign economic conditions; the imposition of economic or trade sanctions; or inadequate or different regulatory and accounting standards. Securities of issuers in emerging markets may be subject to greater risks than securities of issuers in more developed foreign markets because, among other things, emerging markets may have less stable political and economic environments. In addition, there often is substantially less publicly available information about issuers and such information tends to be of a lesser quality. Economic markets and structures tend to be less mature and diverse and the securities markets may also be smaller, less liquid, and subject to greater price volatility.
Nomura VIP International Core Equity Series \| Large-capitalization company risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large-capitalization company risk — Large-capitalization companies tend to be less volatile than companies with smaller market capitalizations. This potentially lower risk means that the Series’ share price may not rise as much as the share prices of funds that focus on smaller-capitalization companies.
Nomura VIP International Core Equity Series \| Redemption risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Redemption risk — If investors redeem more shares of a series than are purchased for an extended period of time, a series may be required to sell securities without regard to the investment merits of such actions. This could decrease a series’ asset base, potentially resulting in a higher expense ratio.
Nomura VIP International Core Equity Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP International Core Equity Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP International Core Equity Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Asset Strategy Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Asset Strategy Series \| Loans and Other Direct Indebtedness Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Loans and other direct indebtedness risk — The risk that a series will not receive payment of principal, interest, and other amounts due in connection with these investments and will depend primarily on the financial condition of the borrower and the lending institution. A series’ ability to sell its loans or to realize their full value upon sale may also be impaired due to the lack of an active trading market, irregular trading activity, wide bid/ask spreads, contractual restrictions, and extended trade settlement periods. In addition, certain loans in which a series invests may not be considered securities. A series therefore may not be able to rely upon the anti-fraud provisions of the federal securities laws with respect to these investments.
Nomura VIP Asset Strategy Series \| Subsidiary risk
Prospectus [Line Items]
Risk [Text Block]	Subsidiary risk — The Subsidiary is not registered, nor subject to the investor protections, under the Investment Company Act of 1940 (1940 Act), and does not benefit from all the investor protections that apply to 1940 Act-registered funds. Changes in applicable tax laws could result in the inability of the Series and/or the Subsidiary to operate as described herein, which could adversely affect the Series and its shareholders.
Nomura VIP Asset Strategy Series \| Credit risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Credit risk — The risk that an issuer of a debt security, including a governmental issuer or an entity that insures a bond, may be unable to make interest payments and/or repay principal in a timely manner.
Nomura VIP Asset Strategy Series \| Interest rate risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Interest rate risk — The risk that the prices of bonds and other fixed income securities will increase as interest rates fall and decrease as interest rates rise. Interest rate changes are influenced by a number of factors, such as government policy, monetary policy, inflation expectations, and the supply and demand of bonds. Bonds and other fixed income securities with longer maturities or duration generally are more sensitive to interest rate changes. A series may be subject to a greater risk of rising interest rates when interest rates are low or inflation rates are high or rising.
Nomura VIP Asset Strategy Series \| High Yield (Junk) Bond Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	High yield (junk) bond risk — The risk that high yield securities, commonly known as “junk bonds,” are subject to reduced creditworthiness of issuers, increased risk of default, and a more limited and less liquid secondary market. High yield securities may also be subject to greater price volatility and risk of loss of income and principal than are higher-rated securities.
Nomura VIP Asset Strategy Series \| Mortgage-Backed and Asset-Backed Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Mortgage-backed and asset-backed securities risk — Mortgage-backed and asset-backed securities, like other fixed income securities, are subject to credit risk and interest rate risk, and may also be subject to prepayment risk and extension risk. Prepayment risk is the risk that the principal on mortgage-backed or asset-backed securities may be prepaid at any time, which will reduce the yield and market value of the securities and may cause the series to reinvest the proceeds in lower yielding securities. Extension risk is the risk that principal on mortgage-backed or asset-backed securities will be repaid more slowly than expected, which may reduce the proceeds available for reinvestment in higher yielding securities. In addition, mortgage-backed and asset-backed securities may decline in value, become more volatile, face difficulties in valuation, or experience reduced liquidity due to changes in interest rates or general economic conditions. Certain mortgage-backed or asset-backed securities, such as collateralized mortgage obligations, real estate mortgage investment conduits, and stripped mortgage-backed securities, may be more susceptible to these risks than other mortgage-backed, asset-backed, or fixed-income securities.
Nomura VIP Asset Strategy Series \| Exchange-traded fund risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Exchange-traded fund risk — The risks of investing in an ETF typically reflect the risks of the instruments in which the ETF invests. Because ETFs are investment companies, a series will bear its proportionate share of the fees and expenses of an investment in an ETF. As a result, a series’ expenses may be higher and performance may be lower.
Nomura VIP Asset Strategy Series \| US Government Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	US government securities risk — The risk that certain US government securities, such as securities issued by Fannie Mae, Freddie Mac and the Federal Home Loan Bank system (FHLB), are not backed by the “faith and credit” of the US government and, instead, may be supported only by the credit of the issuer or by the right of the issuer to borrow from the US Treasury.
Nomura VIP Asset Strategy Series \| Commodity-related investments risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Commodity-related investments risk — The value of commodities investments will generally be affected by overall market movements and factors specific to a particular industry or commodity, which may include weather, embargoes, tariffs, and economic health, political, international regulatory and other developments. Exposure to the commodities markets may subject a series to greater volatility than investments in traditional securities.
Nomura VIP Asset Strategy Series \| Foreign and Emerging Markets Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Foreign and emerging markets risk — The risk that investments in foreign securities (particularly those of issuers in emerging markets) may be adversely affected by political instability; changes in currency exchange rates; inefficient markets and higher transaction costs; foreign economic conditions; the imposition of economic or trade sanctions; or inadequate or different regulatory and accounting standards. Securities of issuers in emerging markets may be subject to greater risks than securities of issuers in more developed foreign markets because, among other things, emerging markets may have less stable political and economic environments. In addition, there often is substantially less publicly available information about issuers and such information tends to be of a lesser quality. Economic markets and structures tend to be less mature and diverse and the securities markets may also be smaller, less liquid, and subject to greater price volatility.
Nomura VIP Asset Strategy Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP Asset Strategy Series \| Derivatives Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Derivatives risk — Derivatives contracts, such as futures, forward foreign currency contracts, options, and swaps, may involve additional expenses (such as the payment of premiums) and are subject to significant loss if a security, index, reference rate, or other asset or market factor to which a derivatives contract is associated, moves in an unanticipated direction. When used for hedging, the change in value of the derivatives instrument may also not correlate specifically with the currency, rate, or other risk being hedged, in which case a series may not realize the intended benefits. Derivatives contracts are also subject to the risk that the counterparty may fail to perform its obligations under the contract due to, among other reasons, financial difficulties (such as a bankruptcy or reorganization).
Nomura VIP Asset Strategy Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Asset Strategy Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Balanced Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Balanced Series \| Preferred stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Preferred stock risk — The risk that preferred stocks may be subordinated to bonds in terms of rights to their share of the company’s assets, may be less liquid than many other securities, and generally offer no voting rights with respect to the issuer. Preferred stocks may also be adversely affected by interest rates and may be callable by the issuer.
Nomura VIP Balanced Series \| REIT-related risk [Member]
Prospectus [Line Items]
Risk [Text Block]	REIT-related risk — The risk that the value of a series’ investments in a REIT may be adversely affected by (1) changes in the value of the REIT’s underlying property or the property secured by mortgages the REIT holds; (2) loss of REIT federal tax status (and the resulting inability to qualify for modified pass-through tax treatment under the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code” or the “Code”)) or changes in laws and/or rules related to that status; or (3) the REIT’s failure to maintain its exemption from registration under the Investment Company Act of 1940 (1940 Act). In addition, a series may experience a decline in its income from REIT securities due to falling interest rates or decreasing dividend payments.
Nomura VIP Balanced Series \| Credit risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Credit risk — The risk that an issuer of a debt security, including a governmental issuer or an entity that insures a bond, may be unable to make interest payments and/or repay principal in a timely manner.
Nomura VIP Balanced Series \| Interest rate risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Interest rate risk — The risk that the prices of bonds and other fixed income securities will increase as interest rates fall and decrease as interest rates rise. Interest rate changes are influenced by a number of factors, such as government policy, monetary policy, inflation expectations, and the supply and demand of bonds. Bonds and other fixed income securities with longer maturities or duration generally are more sensitive to interest rate changes. A series may be subject to a greater risk of rising interest rates when interest rates are low or inflation rates are high or rising.
Nomura VIP Balanced Series \| High Yield (Junk) Bond Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	High yield (junk) bond risk — The risk that high yield securities, commonly known as “junk bonds,” are subject to reduced creditworthiness of issuers, increased risk of default, and a more limited and less liquid secondary market. High yield securities may also be subject to greater price volatility and risk of loss of income and principal than are higher-rated securities.
Nomura VIP Balanced Series \| Exchange-traded fund risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Exchange-traded fund risk — The risks of investing in an ETF typically reflect the risks of the instruments in which the ETF invests. Because ETFs are investment companies, a series will bear its proportionate share of the fees and expenses of an investment in an ETF. As a result, a series’ expenses may be higher and performance may be lower.
Nomura VIP Balanced Series \| US Government Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	US government securities risk — The risk that certain US government securities, such as securities issued by Fannie Mae, Freddie Mac and the Federal Home Loan Bank system (FHLB), are not backed by the “faith and credit” of the US government and, instead, may be supported only by the credit of the issuer or by the right of the issuer to borrow from the US Treasury.
Nomura VIP Balanced Series \| Company size risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Company size risk — The risk that investments in small- and/or medium-sized companies may be more volatile than those of larger companies because of limited financial resources or dependence on narrow product lines.
Nomura VIP Balanced Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP Balanced Series \| Foreign Risk
Prospectus [Line Items]
Risk [Text Block]	Foreign risk — The risk that investments in foreign securities (particularly those of issuers in emerging markets) may be adversely affected by political instability, changes in currency exchange rates, inefficient markets and higher transaction costs, foreign economic conditions, the imposition of economic or trade sanctions, or inadequate or different regulatory and accounting standards.
Nomura VIP Balanced Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Balanced Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Energy Series \| Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.
Nomura VIP Energy Series \| Risk Nondiversified Status [Member]
Prospectus [Line Items]
Risk [Text Block]	Nondiversification risk — A nondiversified series has the flexibility to invest as much as 50% of its assets in as few as two issuers with no single issuer accounting for more than 25% of the series. The remaining 50% of its assets must be diversified so that no more than 5% of its assets are invested in the securities of a single issuer. Because a nondiversified series may invest its assets in fewer issuers, the value of its shares may increase or decrease more rapidly than if it were fully diversified.
Nomura VIP Energy Series \| Initial public offering (IPO) risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Initial public offering (IPO) risk — The risk that any positive effect of investments in IPOs may not be sustainable because of a number of factors. Namely, a series may not be able to buy shares in some IPOs, or may be able to buy only a small number of shares. Also, the performance of IPOs generally is volatile, and is dependent on market psychology and economic conditions. To the extent that IPOs have a significant positive impact on a series’ performance, this may not be able to be replicated in the future. The relative performance impact of IPOs also is likely to decline as a series grows.
Nomura VIP Energy Series \| MLP risk [Member]
Prospectus [Line Items]
Risk [Text Block]	MLP risk — The risk related to the Series’ investment in MLPs. Energy infrastructure MLPs are subject to a variety of industry specific risk factors that may adversely affect their business or operations, including those due to commodity production, volumes, commodity prices, weather conditions, terrorist attacks, etc. They are also subject to significant federal, state and local government regulation. Investment in MLPs may also have tax consequences for shareholders. If the Series retains its investment until its basis is reduced to zero, subsequent distributions will be taxable at ordinary income rates and shareholders may receive corrected 1099s.
Nomura VIP Energy Series \| Currency Risk
Prospectus [Line Items]
Risk [Text Block]	Currency risk — The risk that fluctuations in exchange rates between the US dollar and foreign currencies and between various foreign currencies may cause the value of an investment to decline.
Nomura VIP Energy Series \| US Government Securities Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	US government securities risk — The risk that certain US government securities, such as securities issued by Fannie Mae, Freddie Mac and the Federal Home Loan Bank system (FHLB), are not backed by the “faith and credit” of the US government and, instead, may be supported only by the credit of the issuer or by the right of the issuer to borrow from the US Treasury.
Nomura VIP Energy Series \| Energy sector risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Energy sector risk — The risk that investment risks associated with investing in energy securities, in addition to other risks, include price fluctuation caused by real and perceived inflationary trends and political developments, the cost assumed in complying with environmental safety regulations, demand of energy fuels, energy conservation, the success of exploration projects, and tax and other governmental regulations.
Nomura VIP Energy Series \| Value stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Value stock risk — The risk that the value of a security believed by the Manager to be undervalued may never reach what is believed to be its full value; such security’s value may decrease or such security may be appropriately priced. Value stocks are stocks of companies that may have experienced adverse business or industry developments or may be subject to special risks that have caused the stocks to be out of favor and, in the opinion of the Manager, undervalued.
Nomura VIP Energy Series \| Foreign currency exchange transactions and forward foreign currency contracts risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Foreign currency exchange transactions and forward foreign currency contracts risk — The risk that a series’ use of foreign currency exchange transactions and forward foreign currency contracts to hedge certain market risks (such as interest rates, currency exchange rates and broad or specific market movement) may increase the possibility of default by the counterparty to the transaction and, to the extent the Manager’s judgment as to certain market movements is incorrect, the risk of losses that are greater than if the investment technique had not been used.
Nomura VIP Energy Series \| Growth stock risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Growth stock risk — Growth stocks reflect projections of future earnings and revenue. These prices may rise or fall dramatically depending on whether those projections are met. These companies’ stock prices may be more volatile, particularly over the short term.
Nomura VIP Energy Series \| Concentration risk
Prospectus [Line Items]
Risk [Text Block]	Concentration risk — The risk that a concentration in a particular industry will cause a series to be more exposed to developments affecting that single industry or industry group than a more broadly diversified series would be. A series could experience greater volatility or may perform poorly during a downturn in the industry or industry group because it is more susceptible to the economic, regulatory, political, legal and other risks associated with those industries than a series that invests more broadly.
Nomura VIP Energy Series \| Limited number of securities risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Limited number of securities risk — The possibility that a single security’s increase or decrease in value may have a greater impact on a series’ value and total return because the series may hold larger positions in fewer securities than other series. In addition, a series that holds a limited number of securities may be more volatile than those series that hold a greater number of securities.
Nomura VIP Energy Series \| Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market risk — The risk that all or a majority of the securities in a certain market — such as the stock or bond market — will decline in value because of factors such as adverse political or economic conditions, future expectations, investor confidence, or heavy institutional selling.
Nomura VIP Energy Series \| Foreign Risk
Prospectus [Line Items]
Risk [Text Block]	Foreign risk — The risk that investments in foreign securities (particularly those of issuers in emerging markets) may be adversely affected by political instability, changes in currency exchange rates, inefficient markets and higher transaction costs, foreign economic conditions, the imposition of economic or trade sanctions, or inadequate or different regulatory and accounting standards.
Nomura VIP Energy Series \| Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity risk — The possibility that investments cannot be readily sold within seven calendar days at approximately the price at which a series has valued them.
Nomura VIP Energy Series \| Active management and selection risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Active management and selection risk — The risk that the securities selected by a series’ management will underperform the markets, the relevant indices, or the securities selected by other funds with similar investment objectives and investment strategies. The securities and sectors selected may vary from the securities and sectors included in the relevant index.
Nomura VIP Natural Resources Series \| Risk Lose Money [Member]
Prospectus [Line Items]

Investing in any mutual fund involves the risk that you may lose part or all of the money you invest. Over time, the value of your investment in the Series will increase and decrease according to changes in the value of the securities in the Series’ portfolio. An investment in the Series may not be appropriate for all investors.

Value stock risk — The risk that the value of a security believed by the Manager to be undervalued may never reach what is believed to be its full value; such security’s value may decrease or such security may be appropriately priced. Value stocks are stocks of companies that may have experienced adverse business or industry developments or may be subject to special risks that have caused the stocks to be out of favor and, in the opinion of the Manager, undervalued.