Net Assets Investment Company, Portfolio Turnover Empower Securefoundation® Balanced Fund - Class L [Member] Investment Type [Axis] Bond [Member] Fixed Interest Contract [Member] International Equity [Member] Large Cap Equity [Member] Mid Cap Equity [Member] Small Cap Equity [Member] Empower S&P 500® Index Fund Institutional Class [Member] Empower S&P Mid Cap 400® Index Fund Institutional Class [Member] Empower S&P Small Cap 600® Index Fund Institutional Class [Member] Empower Bond Index Fund Institutional Class [Member] Empower International Index Fund Institutional Class [Member] Empower of America Contract [Member] Fidelity® Emerging Markets Index Fund Institutional Class [Member] Empower Securefoundation® Balanced Fund - Institutional Class [Member] Empower Securefoundation® Balanced Fund - Investor Class [Member] Empower Securefoundation® Balanced Fund - Service Class [Member] Empower Securefoundation® Balanced ETF Fund - Class A [Member] Government Money Market Mutual Funds [Member] Federated Hermes Government Obligations Fund Institutional Class [Member] Vanguard FTSE Developed Markets ETF [Member] Vanguard FTSE Emerging Markets ETF [Member] Vanguard Total Bond Market ETF [Member] Vanguard S&P 500® ETF [Member] Vanguard S&P Mid-Cap 400® ETF [Member] Vanguard Russell 2000 ETF [Member] Dreyfus Institutional Preferred Government Money Market Fund Institutional Class [Member]