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-Topic 505
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Insurance Subsidiaries - Dividends Restrictions and Approved Distributions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2025
Statutory Accounting Practices [Line Items]
Dividends Paid	$ 168	$ 125	$ 80
Insurance Laws Applicable to Insurance Subsidiaries in Connecticut, Iowa, and Minnesota [Member]
Statutory Accounting Practices [Line Items]
Percentage Threshold of Dividends Paid in Previous Twelve Months to Earned Statutory Surplus of Prior Year End, Requiring Approval of Payment of Dividends if Exceeded	10.00%
Subsidiaries \| Voya Retirement Insurance and Annuity Company ("VRIAC") (CT) \| Connecticut
Statutory Accounting Practices [Line Items]
Dividends Permitted without Approval	$ 473
Dividends Paid	473	310
Extraordinary Distributions Paid	0	0
Subsidiaries \| Voya Retirement Insurance and Annuity Company ("VRIAC") (CT) \| Connecticut \| Forecast
Statutory Accounting Practices [Line Items]
Dividends Permitted without Approval				$ 562
Subsidiaries \| ReliaStar Life Insurance Company ("RLI") (MN) \| Minnesota
Statutory Accounting Practices [Line Items]
Dividends Permitted without Approval	403
Dividends Paid	402	0
Extraordinary Distributions Paid	$ 0	$ 747
Subsidiaries \| ReliaStar Life Insurance Company ("RLI") (MN) \| Minnesota \| Forecast
Statutory Accounting Practices [Line Items]
Dividends Permitted without Approval				$ 177