Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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Insurance Subsidiaries - Dividends Restrictions and Approved Distributions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2021
Statutory Accounting Practices [Line Items]
Dividends Paid	$ 76	$ 44	$ 6
Insurance Laws Applicable to Insurance Subsidiaries in Connecticut, Indiana. Iowa, and Minnesota
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%
Insurance Laws Applicable to Insurance Subsidiaries in Colorado
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	$ 295
Dividends Paid	294	396
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				$ 372
Subsidiaries \| ReliaStar Life Insurance Company ("RLI") (MN) \| Minnesota
Statutory Accounting Practices [Line Items]
Dividends Permitted without Approval	0
Dividends Paid	0	0
Extraordinary Distributions Paid	$ 0	$ 360
Subsidiaries \| ReliaStar Life Insurance Company ("RLI") (MN) \| Minnesota \| Forecast
Statutory Accounting Practices [Line Items]
Dividends Permitted without Approval				$ 0