v3.26.1
Empower Real Estate Index Fund Investment Risks - Empower Real Estate Index Fund
Dec. 31, 2025
Real Estate Investment Trust Real Estate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Real Estate Investment Trust/Real Estate Risk - Investments in real estate-related instruments may be affected by similar risks as direct investment in real estate and the real estate market generally, including economic, legal, cultural, governmental, environmental or technological factors that affect property values, rents or occupancies of real estate. Historically, the real estate industry has been cyclical and particularly sensitive to economic downturns and other events that limit demand for real estate, which would adversely impact the value of real estate investments. Real estate companies, including REITs or similar structures, tend to be small and mid cap companies, which means their shares may be more volatile and less liquid. REITs and real estate-related companies may not be diversified due to ownership of a limited number of properties or concentration in a particular geographic region or property type. REITs are also subject to risks associated with changes in interest rates.
Industry Concentration Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Industry Concentration Risk - Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry, and the securities of companies in that industry could react similarly to these or other developments. In addition, a small number of companies may represent a large portion of a single industry, and these companies can be sensitive to adverse economic, regulatory, or financial developments. Because the Fund concentrates its assets in the real estate industry, including REIT stocks, industry concentration risk is high.
Equity Securities Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Equity Securities Risk - The value of equity securities held by the Fund may decline as a result of factors directly related to a company, a particular industry or industries, or general market conditions that are not specifically related to a company or an industry.
Market Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Market Risk - The value of the Fund’s investments may decrease, sometimes rapidly or unexpectedly, due to factors affecting (or perceived to affect) specific issuers held by the Fund, particular industries represented in the Fund’s portfolio, or the overall securities markets. A variety of factors can increase the volatility of the Fund’s holdings and markets generally, including political or regulatory developments, recessions, inflation, deflation, rapid interest rate changes, bank failures, war or acts of terrorism, sanctions, tariffs, natural disasters, outbreaks of infectious illnesses or other widespread public health issues, general outlook for corporate earnings, or adverse investor sentiment generally. Certain events may cause instability across global markets, including reduced liquidity and disruptions in trading markets, while some events may affect certain geographic regions, countries, sectors and industries more significantly than others. These adverse developments may cause broad declines in an issuer’s value due to short-term market movements or for significantly longer periods during more prolonged market downturns.
Index Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Index Risk - Because the Fund is not actively managed but is designed to track the performance of the Benchmark Index, investors should generally expect the value of the Fund to decline when the performance of the Benchmark Index declines. There is no guarantee that the Fund will achieve a high degree of correlation to the Benchmark Index. Additionally, the Benchmark Index may perform unfavorably or underperform the market as a whole. As a result, the Fund may have poor investment results even if it closely tracks the performance of the Benchmark Index because the adverse performance of a particular security normally will not result in eliminating the security from the Fund.
Tracking Error Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Tracking Error Risk - The Fund may not be able to precisely track the performance of the Benchmark Index. Unlike the Fund, the performance of the Benchmark Index is not impacted by fees and expenses, including trading costs associated with implementing portfolio changes. In addition, the Fund may own less than all the securities of the Benchmark Index, which also may cause a variance between the performance of the Fund and the performance of the Benchmark Index. Tracking error risk may cause the Fund’s performance to be less than expected.
Small Or Mid Cap Company Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Small- and Medium-Size Company Risk - The stocks of small- and medium-size companies often trade in lower volumes, may be less liquid, and are subject to greater or more unpredictable price changes than stocks of larger companies. Such companies may also have limited markets, financial resources or product lines, may lack management depth, and may be more vulnerable to adverse business or market developments. Accordingly, stocks of small- and medium-size companies tend to be more sensitive to changing economic, market, and industry conditions, tend to be more volatile and less liquid than stocks of larger companies, especially over the short term, and are less likely to survive or accomplish their goals, with the result that the value of their stock could decline significantly. In addition, there may be less publicly available information concerning small- and medium-size companies upon which to base an investment decision.
Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Derivatives Risk - The use of derivatives, including but not limited to futures contracts, options on futures contracts and swaps, may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities underlying those derivatives. These risks include imperfect correlations with underlying investments or the Fund’s other portfolio holdings, magnified losses resulting from leverage, counterparty risk, high price volatility, liquidity risk, segregation risk, valuation risk and legal restrictions.
Management Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] Management Risk - A strategy, investment decision, technique, analysis, or model used by the portfolio managers may fail to produce the intended results, or imperfections, errors or limitations in the tools and data used by the portfolio managers may cause unintended results. Therefore, the Fund could underperform in comparison to other funds with similar objectives and investment strategies and may generate losses even in a favorable market.
Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] and is subject to the possible loss of your original investment.
Risk Not Insured [Member]  
Prospectus [Line Items]  
Risk [Text Block] An investment in the Fund is not a deposit with a bank, is not insured, endorsed or guaranteed by the Federal Deposit Insurance Corporation or any government agency
Risk Nondiversified Status [Member]  
Prospectus [Line Items]  
Risk [Text Block] Non-Diversification Risk - The Fund is classified as non-diversified, which means a relatively high percentage of its assets may be invested in securities of a limited number of issuers. As a result, the Fund may be more susceptible to the risks associated with these particular issuers or to a single economic, political or regulatory occurrence affecting these issuers.