Shareholder Report, Holdings (Details)	Jun. 30, 2026
Empower Real Estate Index Fund - Institutional Class \| Welltower Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	12.43%
Empower Real Estate Index Fund - Institutional Class \| Prologis Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	9.80%
Empower Real Estate Index Fund - Institutional Class \| Equinix Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	7.98%
Empower Real Estate Index Fund - Institutional Class \| Simon Property Group Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	5.63%
Empower Real Estate Index Fund - Institutional Class \| Digital Realty Trust Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	4.60%
Empower Real Estate Index Fund - Institutional Class \| Realty Income Corp REIT [Member]
Holdings [Line Items]
Percent of Total Investments	4.48%
Empower Real Estate Index Fund - Institutional Class \| Public Storage REIT [Member]
Holdings [Line Items]
Percent of Total Investments	3.90%
Empower Real Estate Index Fund - Institutional Class \| Ventas Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	3.35%
Empower Real Estate Index Fund - Institutional Class \| Dreyfus Institutional Preferred Government Money Market Fund Institutional Class [Member]
Holdings [Line Items]
Percent of Total Investments	2.97%
Empower Real Estate Index Fund - Institutional Class \| Extra Space Storage Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	2.38%
Empower Real Estate Index Fund - Institutional Class \| Health Care REITS [Member]
Holdings [Line Items]
Percent of Total Investments	21.59%
Empower Real Estate Index Fund - Institutional Class \| Diversified REITS [Member]
Holdings [Line Items]
Percent of Total Investments	14.85%
Empower Real Estate Index Fund - Institutional Class \| Warehouse/Industry REITS [Member]
Holdings [Line Items]
Percent of Total Investments	13.68%
Empower Real Estate Index Fund - Institutional Class \| Apartment REITS [Member]
Holdings [Line Items]
Percent of Total Investments	10.88%
Empower Real Estate Index Fund - Institutional Class \| Storage REITS [Member]
Holdings [Line Items]
Percent of Total Investments	7.37%
Empower Real Estate Index Fund - Institutional Class \| Single Tenant REITS [Member]
Holdings [Line Items]
Percent of Total Investments	6.72%
Empower Real Estate Index Fund - Institutional Class \| Regional Malls REITS [Member]
Holdings [Line Items]
Percent of Total Investments	6.59%
Empower Real Estate Index Fund - Institutional Class \| Shopping Centers REITS [Member]
Holdings [Line Items]
Percent of Total Investments	5.53%
Empower Real Estate Index Fund - Institutional Class \| Office Property REITS [Member]
Holdings [Line Items]
Percent of Total Investments	3.36%
Empower Real Estate Index Fund - Institutional Class \| Hotels REITS [Member]
Holdings [Line Items]
Percent of Total Investments	3.27%
Empower Real Estate Index Fund - Institutional Class \| Government Money Market Funds [Member]
Holdings [Line Items]
Percent of Total Investments	2.97%
Empower Real Estate Index Fund - Institutional Class \| Manufactured Homes REITS [Member]
Holdings [Line Items]
Percent of Total Investments	2.05%
Empower Real Estate Index Fund - Institutional Class \| Short Term Investments [Member]
Holdings [Line Items]
Percent of Total Investments	1.14%
Empower Real Estate Index Fund - Investor Class \| Welltower Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	12.43%
Empower Real Estate Index Fund - Investor Class \| Prologis Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	9.80%
Empower Real Estate Index Fund - Investor Class \| Equinix Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	7.98%
Empower Real Estate Index Fund - Investor Class \| Simon Property Group Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	5.63%
Empower Real Estate Index Fund - Investor Class \| Digital Realty Trust Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	4.60%
Empower Real Estate Index Fund - Investor Class \| Realty Income Corp REIT [Member]
Holdings [Line Items]
Percent of Total Investments	4.48%
Empower Real Estate Index Fund - Investor Class \| Public Storage REIT [Member]
Holdings [Line Items]
Percent of Total Investments	3.90%
Empower Real Estate Index Fund - Investor Class \| Ventas Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	3.35%
Empower Real Estate Index Fund - Investor Class \| Dreyfus Institutional Preferred Government Money Market Fund Institutional Class [Member]
Holdings [Line Items]
Percent of Total Investments	2.97%
Empower Real Estate Index Fund - Investor Class \| Extra Space Storage Inc REIT [Member]
Holdings [Line Items]
Percent of Total Investments	2.38%
Empower Real Estate Index Fund - Investor Class \| Health Care REITS [Member]
Holdings [Line Items]
Percent of Total Investments	21.59%
Empower Real Estate Index Fund - Investor Class \| Diversified REITS [Member]
Holdings [Line Items]
Percent of Total Investments	14.85%
Empower Real Estate Index Fund - Investor Class \| Warehouse/Industry REITS [Member]
Holdings [Line Items]
Percent of Total Investments	13.68%
Empower Real Estate Index Fund - Investor Class \| Apartment REITS [Member]
Holdings [Line Items]
Percent of Total Investments	10.88%
Empower Real Estate Index Fund - Investor Class \| Storage REITS [Member]
Holdings [Line Items]
Percent of Total Investments	7.37%
Empower Real Estate Index Fund - Investor Class \| Single Tenant REITS [Member]
Holdings [Line Items]
Percent of Total Investments	6.72%
Empower Real Estate Index Fund - Investor Class \| Regional Malls REITS [Member]
Holdings [Line Items]
Percent of Total Investments	6.59%
Empower Real Estate Index Fund - Investor Class \| Shopping Centers REITS [Member]
Holdings [Line Items]
Percent of Total Investments	5.53%
Empower Real Estate Index Fund - Investor Class \| Office Property REITS [Member]
Holdings [Line Items]
Percent of Total Investments	3.36%
Empower Real Estate Index Fund - Investor Class \| Hotels REITS [Member]
Holdings [Line Items]
Percent of Total Investments	3.27%
Empower Real Estate Index Fund - Investor Class \| Government Money Market Funds [Member]
Holdings [Line Items]
Percent of Total Investments	2.97%
Empower Real Estate Index Fund - Investor Class \| Manufactured Homes REITS [Member]
Holdings [Line Items]
Percent of Total Investments	2.05%
Empower Real Estate Index Fund - Investor Class \| Short Term Investments [Member]
Holdings [Line Items]
Percent of Total Investments	1.14%

Shareholder Report, Holdings (Details)

Jun. 30, 2026