Shareholder Report, Holdings (Details)	Jun. 30, 2025
Empower S&P Small Cap 600® Index Fund-Class L \| Mr Cooper Group Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.69%
Empower S&P Small Cap 600® Index Fund-Class L \| AeroVironment Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.58%
Empower S&P Small Cap 600® Index Fund-Class L \| Brinker International Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.58%
Empower S&P Small Cap 600® Index Fund-Class L \| Qorvo Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.57%
Empower S&P Small Cap 600® Index Fund-Class L \| BorgWarner Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.53%
Empower S&P Small Cap 600® Index Fund-Class L \| Badger Meter Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.52%
Empower S&P Small Cap 600® Index Fund-Class L \| Armstrong World Industries Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.51%
Empower S&P Small Cap 600® Index Fund-Class L \| Kratos Defense & Security Solutions Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.56%
Empower S&P Small Cap 600® Index Fund-Class L \| SPX Technologies Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.57%
Empower S&P Small Cap 600® Index Fund-Class L \| Dreyfus Institutional Preferred Government Money Market Fund Institutional Class [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%
Empower S&P Small Cap 600® Index Fund-Class L \| Short Term Investment [Member]
Holdings [Line Items]
Percent of Total Investments	0.41%
Empower S&P Small Cap 600® Index Fund-Class L \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Total Investments	26.30%
Empower S&P Small Cap 600® Index Fund-Class L \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	18.24%
Empower S&P Small Cap 600® Index Fund-Class L \| Consumer, Cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	13.63%
Empower S&P Small Cap 600® Index Fund-Class L \| Consumer, Non-cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	16.69%
Empower S&P Small Cap 600® Index Fund-Class L \| Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.95%
Empower S&P Small Cap 600® Index Fund-Class L \| Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.50%
Empower S&P Small Cap 600® Index Fund-Class L \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.19%
Empower S&P Small Cap 600® Index Fund-Class L \| Government Money Market Mutual Funds [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%
Empower S&P Small Cap 600® Index Fund-Class L \| Basic Materials [Member]
Holdings [Line Items]
Percent of Total Investments	3.75%
Empower S&P Small Cap 600® Index Fund-Class L \| Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.04%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Mr Cooper Group Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.69%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| AeroVironment Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.58%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Brinker International Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.58%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Qorvo Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.57%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| BorgWarner Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.53%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Badger Meter Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.52%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Armstrong World Industries Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.51%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Kratos Defense & Security Solutions Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.56%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| SPX Technologies Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.57%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Dreyfus Institutional Preferred Government Money Market Fund Institutional Class [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Short Term Investment [Member]
Holdings [Line Items]
Percent of Total Investments	0.41%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Total Investments	26.30%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	18.24%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Consumer, Cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	13.63%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Consumer, Non-cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	16.69%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.95%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.50%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.19%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Government Money Market Mutual Funds [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Basic Materials [Member]
Holdings [Line Items]
Percent of Total Investments	3.75%
Empower S&P Small Cap 600® Index Fund-Institutional Class \| Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.04%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Mr Cooper Group Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.69%
Empower S&P Small Cap 600® Index Fund-Investor Class \| AeroVironment Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.58%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Brinker International Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.58%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Qorvo Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.57%
Empower S&P Small Cap 600® Index Fund-Investor Class \| BorgWarner Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.53%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Badger Meter Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.52%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Armstrong World Industries Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.51%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Kratos Defense & Security Solutions Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.56%
Empower S&P Small Cap 600® Index Fund-Investor Class \| SPX Technologies Inc [Member]
Holdings [Line Items]
Percent of Total Investments	0.57%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Dreyfus Institutional Preferred Government Money Market Fund Institutional Class [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Short Term Investment [Member]
Holdings [Line Items]
Percent of Total Investments	0.41%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Total Investments	26.30%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	18.24%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Consumer, Cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	13.63%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Consumer, Non-cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	16.69%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.95%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.50%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.19%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Government Money Market Mutual Funds [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Basic Materials [Member]
Holdings [Line Items]
Percent of Total Investments	3.75%
Empower S&P Small Cap 600® Index Fund-Investor Class \| Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.04%
Empower Small Cap Growth Fund - Institutional Class \| PAR Technology Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.15%
Empower Small Cap Growth Fund - Institutional Class \| Kratos Defense & Security Solutions Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.11%
Empower Small Cap Growth Fund - Institutional Class \| SPX Technologies Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.10%
Empower Small Cap Growth Fund - Institutional Class \| CyberArk Software Ltd [Member]
Holdings [Line Items]
Percent of Total Investments	1.09%
Empower Small Cap Growth Fund - Institutional Class \| Box Inc Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.09%
Empower Small Cap Growth Fund - Institutional Class \| Oddity Tech Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.08%
Empower Small Cap Growth Fund - Institutional Class \| Stifel Financial Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.06%
Empower Small Cap Growth Fund - Institutional Class \| PTC Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.04%
Empower Small Cap Growth Fund - Institutional Class \| Element Solutions Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.03%
Empower Small Cap Growth Fund - Institutional Class \| Dreyfus Institutional Preferred Government Money Market Fund Institutional Class [Member]
Holdings [Line Items]
Percent of Total Investments	5.33%
Empower Small Cap Growth Fund - Institutional Class \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.38%
Empower Small Cap Growth Fund - Institutional Class \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	18.24%
Empower Small Cap Growth Fund - Institutional Class \| Consumer, Cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	9.12%
Empower Small Cap Growth Fund - Institutional Class \| Consumer, Non-cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	29.25%
Empower Small Cap Growth Fund - Institutional Class \| Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.31%
Empower Small Cap Growth Fund - Institutional Class \| Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	21.25%
Empower Small Cap Growth Fund - Institutional Class \| Government Money Market Mutual Funds [Member]
Holdings [Line Items]
Percent of Total Investments	5.33%
Empower Small Cap Growth Fund - Institutional Class \| Basic Materials [Member]
Holdings [Line Items]
Percent of Total Investments	1.80%
Empower Small Cap Growth Fund - Institutional Class \| Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.32%
Empower Small Cap Growth Fund - Investor Class \| PAR Technology Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.15%
Empower Small Cap Growth Fund - Investor Class \| Kratos Defense & Security Solutions Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.11%
Empower Small Cap Growth Fund - Investor Class \| SPX Technologies Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.10%
Empower Small Cap Growth Fund - Investor Class \| CyberArk Software Ltd [Member]
Holdings [Line Items]
Percent of Total Investments	1.09%
Empower Small Cap Growth Fund - Investor Class \| Box Inc Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.09%
Empower Small Cap Growth Fund - Investor Class \| Oddity Tech Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.08%
Empower Small Cap Growth Fund - Investor Class \| Stifel Financial Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.06%
Empower Small Cap Growth Fund - Investor Class \| PTC Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.04%
Empower Small Cap Growth Fund - Investor Class \| Element Solutions Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.03%
Empower Small Cap Growth Fund - Investor Class \| Dreyfus Institutional Preferred Government Money Market Fund Institutional Class [Member]
Holdings [Line Items]
Percent of Total Investments	5.33%
Empower Small Cap Growth Fund - Investor Class \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.38%
Empower Small Cap Growth Fund - Investor Class \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	18.24%
Empower Small Cap Growth Fund - Investor Class \| Consumer, Cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	9.12%
Empower Small Cap Growth Fund - Investor Class \| Consumer, Non-cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	29.25%
Empower Small Cap Growth Fund - Investor Class \| Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.31%
Empower Small Cap Growth Fund - Investor Class \| Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	21.25%
Empower Small Cap Growth Fund - Investor Class \| Government Money Market Mutual Funds [Member]
Holdings [Line Items]
Percent of Total Investments	5.33%
Empower Small Cap Growth Fund - Investor Class \| Basic Materials [Member]
Holdings [Line Items]
Percent of Total Investments	1.80%
Empower Small Cap Growth Fund - Investor Class \| Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.32%
Empower Small Cap Value Fund - Institutional Class \| Dreyfus Institutional Preferred Government Money Market Fund Institutional Class [Member]
Holdings [Line Items]
Percent of Total Investments	3.01%
Empower Small Cap Value Fund - Institutional Class \| United States Cellular Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.27%
Empower Small Cap Value Fund - Institutional Class \| TTM Technologies Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.26%
Empower Small Cap Value Fund - Institutional Class \| Moog Inc Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.15%
Empower Small Cap Value Fund - Institutional Class \| Talen Energy Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.14%
Empower Small Cap Value Fund - Institutional Class \| Wintrust Financial Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.07%
Empower Small Cap Value Fund - Institutional Class \| Vontier Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.06%
Empower Small Cap Value Fund - Institutional Class \| Popular Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.04%
Empower Small Cap Value Fund - Institutional Class \| SouthState Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.00%
Empower Small Cap Value Fund - Institutional Class \| Federal Agricultural Mortgage Corp Class C [Member]
Holdings [Line Items]
Percent of Total Investments	0.99%
Empower Small Cap Value Fund - Institutional Class \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Total Investments	28.43%
Empower Small Cap Value Fund - Institutional Class \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	17.45%
Empower Small Cap Value Fund - Institutional Class \| Consumer, Cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	14.94%
Empower Small Cap Value Fund - Institutional Class \| Consumer, Non-cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	14.54%
Empower Small Cap Value Fund - Institutional Class \| Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.42%
Empower Small Cap Value Fund - Institutional Class \| Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.80%
Empower Small Cap Value Fund - Institutional Class \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.48%
Empower Small Cap Value Fund - Institutional Class \| Government Money Market Mutual Funds [Member]
Holdings [Line Items]
Percent of Total Investments	3.01%
Empower Small Cap Value Fund - Institutional Class \| Basic Materials [Member]
Holdings [Line Items]
Percent of Total Investments	2.23%
Empower Small Cap Value Fund - Institutional Class \| Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.70%
Empower Small Cap Value Fund - Investor Class \| Dreyfus Institutional Preferred Government Money Market Fund Institutional Class [Member]
Holdings [Line Items]
Percent of Total Investments	3.01%
Empower Small Cap Value Fund - Investor Class \| United States Cellular Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.27%
Empower Small Cap Value Fund - Investor Class \| TTM Technologies Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.26%
Empower Small Cap Value Fund - Investor Class \| Moog Inc Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.15%
Empower Small Cap Value Fund - Investor Class \| Talen Energy Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.14%
Empower Small Cap Value Fund - Investor Class \| Wintrust Financial Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.07%
Empower Small Cap Value Fund - Investor Class \| Vontier Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.06%
Empower Small Cap Value Fund - Investor Class \| Popular Inc [Member]
Holdings [Line Items]
Percent of Total Investments	1.04%
Empower Small Cap Value Fund - Investor Class \| SouthState Corp [Member]
Holdings [Line Items]
Percent of Total Investments	1.00%
Empower Small Cap Value Fund - Investor Class \| Federal Agricultural Mortgage Corp Class C [Member]
Holdings [Line Items]
Percent of Total Investments	0.99%
Empower Small Cap Value Fund - Investor Class \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Total Investments	28.43%
Empower Small Cap Value Fund - Investor Class \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	17.45%
Empower Small Cap Value Fund - Investor Class \| Consumer, Cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	14.94%
Empower Small Cap Value Fund - Investor Class \| Consumer, Non-cyclical [Member]
Holdings [Line Items]
Percent of Total Investments	14.54%
Empower Small Cap Value Fund - Investor Class \| Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.42%
Empower Small Cap Value Fund - Investor Class \| Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.80%
Empower Small Cap Value Fund - Investor Class \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.48%
Empower Small Cap Value Fund - Investor Class \| Government Money Market Mutual Funds [Member]
Holdings [Line Items]
Percent of Total Investments	3.01%
Empower Small Cap Value Fund - Investor Class \| Basic Materials [Member]
Holdings [Line Items]
Percent of Total Investments	2.23%
Empower Small Cap Value Fund - Investor Class \| Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.70%

Shareholder Report, Holdings (Details)

Jun. 30, 2025