| Label | Element | Value | ||
|---|---|---|---|---|
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Registrant Name | dei_EntityRegistrantName | JOHN HANCOCK FUNDS II | ||
| Prospectus Date | rr_ProspectusDate | Jan. 01, 2025 | ||
| Class NAV | Core Bond Fund | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk/Return [Heading] | rr_RiskReturnHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:24pt;">John Hancock Core Bond Fund</span> | ||
| Objective [Heading] | rr_ObjectiveHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Investment objective</span> | ||
| Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | To seek total return consisting of income and capital appreciation. | ||
| Expense [Heading] | rr_ExpenseHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Fees and expenses</span> | ||
| Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. | ||
| Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | <span style="color:#000000;font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Shareholder fees (%) </span><span style="color:#000000;font-family:Arial Narrow;font-size:8pt;margin-left:0.0pt;">(fees paid directly from your investment)</span> | ||
| Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Annual fund operating expenses (%) </span><span style="font-family:Arial Narrow;font-size:8pt;margin-left:0.0pt;">(expenses that you pay each year as a percentage of the value of your investment)</span> | ||
| Fee Waiver or Reimbursement over Assets, Date of Termination | rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination | <span style="font-family:Arial Narrow;font-size:8pt;">July 31, 2026</span> | ||
| Portfolio Turnover [Heading] | rr_PortfolioTurnoverHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Portfolio turnover</span> | ||
| Portfolio Turnover [Text Block] | rr_PortfolioTurnoverTextBlock | The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During its most recent fiscal year, the fund’s portfolio turnover rate was 237% of the average value of its portfolio. | ||
| Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 237.00% | ||
| Expense Example [Heading] | rr_ExpenseExampleHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Expense example</span> | ||
| Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. Please see below a hypothetical example showing the expenses of a $10,000 investment for the time periods indicated and then assuming you sell all of your shares at the end of those periods. The example assumes a 5% average annual return and that fund expenses will not change over the periods. Although your actual costs may be higher or lower, based on these assumptions, your costs would be: | ||
| Strategy [Heading] | rr_StrategyHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Principal investment strategies</span> | ||
| Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | Under normal market conditions, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in a broad range of investment-grade debt securities, including U.S. government obligations, corporate bonds, mortgage-backed and other asset-backed securities and money market instruments. The fund invests in debt securities that the manager believes offer attractive yields and are undervalued relative to issues of similar credit quality and interest rate sensitivity. The fund may also invest in unrated bonds that the manager believes are comparable to investment-grade debt securities. The fund may invest to a significant extent in mortgage-backed securities, including collateralized mortgage obligations. Under normal market conditions, the manager expects to maintain an effective duration within 10% (in either direction) of the duration of the Bloomberg U.S. Aggregate Bond Index (the duration of this index as of October 31, 2024 was 6.14 years). The fund may invest: ●Up to 25% of total assets in asset-backed securities, other than mortgage-backed securities; ●Up to 20% of total assets in U.S. dollar-denominated obligations of foreign issuers; and ●Up to 10% of total assets in stripped mortgage-backed securities. As part of a mortgage-backed securities investment strategy, the fund may enter into dollar rolls. The fund may also enter into reverse repurchase agreements to enhance return. The fund’s investment process may, at times, result in a higher than average portfolio turnover ratio and increased trading expenses. | ||
| Risk [Heading] | rr_RiskHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Principal risks</span> | ||
| Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | <span style="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Past performance</span> | ||
| Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The following information illustrates the variability of the fund’s returns and provides some indication of the risks of investing in the fund by showing changes in the fund’s performance from year to year and by showing how the fund’s average annual returns compared with a broad-based securities market index. Past performance (before and after taxes) does not indicate future results. All figures assume dividend reinvestment. Performance information is updated daily, monthly, and quarterly and may be obtained by calling 800-344-1029 between 8:00 a.m. and 7:00 p.m., Eastern time, on most business days.Please note that after-tax returns reflect the highest individual federal marginal income-tax rate in effect as of the date provided and do not reflect any state or local taxes. Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k), or other tax-advantaged investment plan. | ||
| Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | <span style="font-family:Arial Narrow;font-size:9pt;">The following information illustrates the variability of the fund’s returns and provides some indication of the risks of investing in the fund by showing changes in the fund’s performance from year to year and by showing how the fund’s average annual returns compared with a broad-based securities market index.</span> | ||
| Performance Availability Phone [Text] | rr_PerformanceAvailabilityPhone | <span style="font-family:Arial Narrow;font-size:9pt;">800-344-1029 between 8:00 </span><span style="font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;">a.m.</span><span style="font-family:Arial Narrow;font-size:9pt;"> and 7:00</span><span style="font-family:Arial Narrow;font-size:9pt;line-height:12pt;"> </span><span style="font-family:Arial Narrow;font-size:9pt;font-variant:small-caps;">p.m.</span><span style="font-family:Arial Narrow;font-size:9pt;">, Eastern time, on most business days.</span> | ||
| Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | <span style="font-family:Arial Narrow;font-size:9pt;"> Past performance (before and after taxes) does not indicate future results.</span> | ||
| Bar Chart [Heading] | rr_BarChartHeading | <span style="font-family:Arial Narrow;font-size:9pt;font-weight:bold;">Calendar year total returns (%)—Class NAV</span> | ||
| Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock | Year-to-date total return through:Q3 20244.64%Best quarter:Q4 20236.67%Worst quarter:Q1 2022-6.13% | ||
| Performance Table Heading | rr_PerformanceTableHeading | <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Average annual total returns (%)—as of 12/31/2023</span> | ||
| Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">Please note that after-tax returns reflect the highest individual federal marginal income-tax rate in effect as of the date provided and do not reflect any state or local taxes.</span> | ||
| Performance Table Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | <span style="color:#000000;font-family:Arial Narrow;font-size:9pt;"> Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k), or other </span><span style="color:#000000;font-family:Arial Narrow;font-size:9pt;">tax-advantaged investment plan.</span> | ||
| Class NAV | Core Bond Fund | Risk Lose Money [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Many factors affect performance, and fund shares will fluctuate in price, meaning you could lose money. | ||
| Class NAV | Core Bond Fund | Risk Not Insured Depository Institution [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. | ||
| Class NAV | Core Bond Fund | Changing Distribution Levels Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Changing distribution levels risk. The fund may cease or reduce the level of its distribution if income or dividends paid from its investments declines. | ||
| Class NAV | Core Bond Fund | Credit And Counterparty Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Credit and counterparty risk. The issuer or guarantor of a fixed-income security, the counterparty to an over-the-counter derivatives contract, or a borrower of fund securities may not make timely payments or otherwise honor its obligations. U.S. government securities are subject to varying degrees of credit risk depending upon the nature of their support. A downgrade or default affecting any of the fund’s securities could affect the fund’s performance. | ||
| Class NAV | Core Bond Fund | Economic And Market Events Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Economic and market events risk. Events in the U.S. and global financial markets, including actions taken by the U.S. Federal Reserve or foreign central banks to stimulate or stabilize economic growth, may at times result in unusually high market volatility, which could negatively impact performance. Reduced liquidity in credit and fixed-income markets could adversely affect issuers worldwide. Banks and financial services companies could suffer losses if interest rates rise or economic conditions deteriorate. | ||
| Class NAV | Core Bond Fund | Fixed Income Securities Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Fixed-income securities risk. A rise in interest rates typically causes bond prices to fall. The longer the average maturity or duration of the bonds held by a fund, the more sensitive it will likely be to interest-rate fluctuations. An issuer may not make all interest payments or repay all or any of the principal borrowed. Changes in a security’s credit quality may adversely affect fund performance. | ||
| Class NAV | Core Bond Fund | Foreign Securities Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Foreign securities risk. Less information may be publicly available regarding foreign issuers, including foreign government issuers. Foreign securities may be subject to foreign taxes and may be more volatile than U.S. securities. Currency fluctuations and political and economic developments may adversely impact the value of foreign securities. | ||
| Class NAV | Core Bond Fund | Hedging Derivatives And Other Strategic Transactions Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Hedging, derivatives, and other strategic transactions risk. Hedging, derivatives, and other strategic transactions may increase a fund’s volatility and could produce disproportionate losses, potentially more than the fund’s principal investment. Risks of these transactions are different from and possibly greater than risks of investing directly in securities and other traditional instruments. Under certain market conditions, derivatives could become harder to value or sell and may become subject to liquidity risk (i.e., the inability to enter into closing transactions). Derivatives and other strategic transactions that the fund intends to utilize include reverse repurchase agreements. An event of default or insolvency of the counterparty to a reverse repurchase agreement could result in delays or restrictions with respect to the fund's ability to dispose of the underlying securities. In addition, a reverse repurchase agreement may be considered a form of leverage and may, therefore, increase fluctuations in the fund's net asset value per share (NAV). | ||
| Class NAV | Core Bond Fund | High Portfolio Turnover Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | High portfolio turnover risk. Trading securities actively and frequently can increase transaction costs (thus lowering performance) and taxable distributions. | ||
| Class NAV | Core Bond Fund | Liquidity Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Liquidity risk. The extent (if at all) to which a security may be sold or a derivative position closed without negatively impacting its market value may be impaired by reduced market activity or participation, legal restrictions, or other economic and market impediments. Liquidity risk may be magnified in rising interest rate environments due to higher than normal redemption rates. Widespread selling of fixed-income securities to satisfy redemptions during periods of reduced demand may adversely impact the price or salability of such securities. Periods of heavy redemption could cause the fund to sell assets at a loss or depressed value, which could negatively affect performance. Redemption risk is heightened during periods of declining or illiquid markets. | ||
| Class NAV | Core Bond Fund | Mortgage Backed And Asset Backed Securities Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Mortgage-backed and asset-backed securities risk. Mortgage-backed and asset-backed securities are subject to different combinations of prepayment, extension, interest-rate, and other market risks. Factors that impact the value of these securities include interest rate changes, the reliability of available information, credit quality or enhancement, and market perception. | ||
| Class NAV | Core Bond Fund | Operational And Cybersecurity Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | Operational and cybersecurity risk. Cybersecurity breaches may allow an unauthorized party to gain access to fund assets, customer data, or proprietary information, or cause a fund or its service providers to suffer data corruption or lose operational functionality. Similar incidents affecting issuers of a fund’s securities may negatively impact performance. Operational risk may arise from human error, error by third parties, communication errors, or technology failures, among other causes. | ||
| Class NAV | Core Bond Fund | US Government Agency Obligations Risk [Member] | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Risk [Text Block] | rr_RiskTextBlock | U.S. government agency obligations risk. The fund invests in obligations issued by agencies and instrumentalities of the U.S. government. Government-sponsored entities such as Federal National Mortgage Association (Fannie Mae), Federal Home Loan Mortgage Corporation (Freddie Mac) and the Federal Home Loan Banks, although chartered or sponsored by Congress, are not funded by congressional appropriations and the debt securities that they issue are neither guaranteed nor issued by the U.S. government. Such debt securities are subject to the risk of default on the payment of interest and/or principal, similar to the debt securities of private issuers. The maximum potential liability of the issuers of some U.S. government obligations may greatly exceed their current resources, including any legal right to support from the U.S. government. Although the U.S. government has provided financial support to Fannie Mae and Freddie Mac in the past, there can be no assurance that it will support these or other government-sponsored entities in the future. | ||
| Class NAV | Core Bond Fund | Class NAV | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| Maximum front-end sales charge (load) | rr_MaximumCumulativeSalesChargeOverOther | none | ||
| Maximum deferred sales charge (load) | rr_MaximumDeferredSalesChargeOverOther | none | ||
| Management fee | rr_ManagementFeesOverAssets | 0.58% | ||
| Other expenses | rr_OtherExpensesOverAssets | 0.04% | ||
| Total annual fund operating expenses | rr_ExpensesOverAssets | 0.62% | ||
| Contractual expense reimbursement | rr_FeeWaiverOrReimbursementOverAssets | (0.01%) | [1] | |
| Total annual fund operating expenses after expense reimbursements | rr_NetExpensesOverAssets | 0.61% | ||
| 1 year | rr_ExpenseExampleYear01 | $ 62 | ||
| 3 years | rr_ExpenseExampleYear03 | 198 | ||
| 5 years | rr_ExpenseExampleYear05 | 345 | ||
| 10 years | rr_ExpenseExampleYear10 | $ 773 | ||
| 2014 | rr_AnnualReturn2014 | 5.94% | ||
| 2015 | rr_AnnualReturn2015 | 0.28% | ||
| 2016 | rr_AnnualReturn2016 | 2.48% | ||
| 2017 | rr_AnnualReturn2017 | 3.29% | ||
| 2018 | rr_AnnualReturn2018 | (0.49%) | ||
| 2019 | rr_AnnualReturn2019 | 8.27% | ||
| 2020 | rr_AnnualReturn2020 | 8.47% | ||
| 2021 | rr_AnnualReturn2021 | (2.04%) | ||
| 2022 | rr_AnnualReturn2022 | (13.59%) | ||
| 2023 | rr_AnnualReturn2023 | 5.83% | ||
| Year to Date Return, Label | rr_YearToDateReturnLabel | <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Year-to-date total return through:</span> | ||
| Bar Chart, Year to Date Return, Date | rr_BarChartYearToDateReturnDate | Sep. 30, 2024 | ||
| Bar Chart, Year to Date Return | rr_BarChartYearToDateReturn | 4.64% | ||
| Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Best quarter:</span> | ||
| Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Dec. 31, 2023 | ||
| Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 6.67% | ||
| Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | <span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;margin-left:0.0pt;">Worst quarter:</span> | ||
| Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Mar. 31, 2022 | ||
| Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (6.13%) | ||
| 1 year | rr_AverageAnnualReturnYear01 | 5.83% | ||
| 5 year | rr_AverageAnnualReturnYear05 | 1.02% | ||
| 10 year | rr_AverageAnnualReturnYear10 | 1.65% | ||
| Class NAV | Core Bond Fund | Return After Taxes on Distributions | Class NAV | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| 1 year | rr_AverageAnnualReturnYear01 | 4.23% | ||
| 5 year | rr_AverageAnnualReturnYear05 | (0.39%) | ||
| 10 year | rr_AverageAnnualReturnYear10 | 0.44% | ||
| Class NAV | Core Bond Fund | Return After Taxes on Distributions and Sale of Shares | Class NAV | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| 1 year | rr_AverageAnnualReturnYear01 | 3.42% | ||
| 5 year | rr_AverageAnnualReturnYear05 | 0.23% | ||
| 10 year | rr_AverageAnnualReturnYear10 | 0.77% | ||
| Class NAV | Core Bond Fund | Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes) | ||||
| Risk Return Abstract | rr_RiskReturnAbstract | |||
| 1 year | rr_AverageAnnualReturnYear01 | 5.53% | ||
| 5 year | rr_AverageAnnualReturnYear05 | 1.10% | ||
| 10 year | rr_AverageAnnualReturnYear10 | 1.81% | ||
| ||||