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Related Party Transactions - Operating Agreements and Investment Advisory and Other Fees (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Earning related to agreements		$ 1,088	$ 905	$ 877
Voya Investment Management LLC
Related Party Transaction [Line Items]
Expenses incurred		69	73	68
Earning related to agreements		67	57	59
Voya Services Company
Related Party Transaction [Line Items]
Asset management, administrative and accounting services fees		505	458	443
Voya Financial Advisors, Inc
Related Party Transaction [Line Items]
Commission expenses incurred		84	81	$ 82
Affiliated entity \| Voya Financial Partners, LLC (VFP)
Related Party Transaction [Line Items]
Distribution revenues	$ 27	$ 31	$ 26