Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income before income taxes	$ 799	$ 678	$ 428
Tax Rate	21.00%	21.00%	21.00%
Income tax expense (benefit) at federal statutory rate	$ 168	$ 142	$ 90
Valuation allowance	1	(1)	7
Dividends received deduction	(49)	(38)	(44)
State tax expense (benefit)	8	(6)	(16)
Noncontrolling interest	(16)	(22)	16
Tax credits	(19)	(17)	(63)
Nondeductible expenses	3	6	7
Security Life of Denver Company capital loss carryback	(38)	(92)	0
Non-taxable Voya India gain	0	(10)	0
Other	(1)	(13)	(2)
Total income tax expense (benefit)	$ 57	$ (51)	$ (5)
Effective tax rate	7.10%	(7.50%)	(1.20%)