Schedule II - Condensed Financial Information of Parent - Statements of Cash Flow (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash Flows from Operating Activities:
Net income (loss) available to Voya Financial, Inc.	$ 667	$ 625	$ 510
Deferred income tax expense (benefit)	42	(62)	3
Net (gains) losses	27	72	686
Changes in operating assets and liabilities:
Other receivables and asset accruals	(153)	31	(211)
Other, net	152	209	143
Net cash (used in) provided by operating activities	1,345	1,638	1,352
Cash Flows from Investing Activities:
Limited partnerships/corporations	292	470	256
Fixed maturities	6,239	6,980	7,900
Fixed maturities	(5,511)	(4,439)	(8,518)
Equity securities	36	139	5
Short-term investments, net	119	144	(260)
Payments for business acquisitions, net of cash acquired	0	(584)	(2)
Collateral received (delivered), net	167	(19)	54
Other, net	(132)	(87)	(65)
Net cash provided by (used in) investing activities	481	2,532	(1,946)
Net cash provided (used in) financing activities
Repayment of debt with maturities of more than three months	(1)	(541)	(366)
Proceeds from issuance of common stock, net	6	0	7
Dividends paid on common stock	(171)	(127)	(83)
Dividends paid on preferred stock	(41)	(36)	(36)
Net cash provided by (used in) financing activities	(1,430)	(4,059)	28
Net increase (decrease) in cash and cash equivalents, including cash in CIEs	396	111	(566)
Cash and cash equivalents, beginning of period	1,118
Cash and cash equivalents, end of period	1,514	1,118
Supplemental cash flow information:
Income taxes paid	9	11	14
Interest paid	103	113	131
Parent
Cash Flows from Operating Activities:
Net income (loss) available to Voya Financial, Inc.	667	625	510
Equity in earnings (losses) of subsidiaries, net of tax	(727)	(642)	(590)
Dividends from subsidiaries	861	1,057	502
Deferred income tax expense (benefit)	37	54	(35)
Net (gains) losses	(20)	(65)	52
Changes in operating assets and liabilities:
Other receivables and asset accruals	1	5	(21)
Due from subsidiaries and affiliates	106	108	46
Other payables and accruals	(12)	0	(10)
Other, net	(2)	(7)	29
Net cash (used in) provided by operating activities	911	1,135	483
Cash Flows from Investing Activities:
Limited partnerships/corporations	0	53	0
Fixed maturities	6	0	22
Fixed maturities	0	0	(16)
Equity securities	0	(3)	0
Short-term investments, net	(7)	(13)	18
Payments for Derivative Instrument, Investing Activities	29	19	(37)
Maturity (issuance) of short-term intercompany loans, net	(99)	(203)	34
Return of capital contributions and dividends from subsidiaries	0	0	708
Capital contributions to subsidiaries	(60)	(8)	0
Payments for business acquisitions, net of cash acquired	0	(584)	0
Collateral received (delivered), net	(10)	15	(5)
Other, net	0	(94)	0
Net cash provided by (used in) investing activities	(141)	(818)	724
Net cash provided (used in) financing activities
Proceeds from issuance of debt with maturities of more than three months	397	400	0
Repayment of debt with maturities of more than three months	0	(393)	(366)
Repayments of Debt	(269)	250	65
Proceeds from issuance of common stock, net	6	0	7
Share-based compensation	(44)	(47)	(40)
Proceeds from (Repurchase of) Equity	(640)	(369)	(750)
Dividends paid on common stock	(168)	(125)	(80)
Dividends paid on preferred stock	(41)	(36)	(36)
Net cash provided by (used in) financing activities	(759)	(320)	(1,200)
Net increase (decrease) in cash and cash equivalents, including cash in CIEs	11	(3)	7
Cash and cash equivalents, beginning of period	206	209	202
Cash and cash equivalents, end of period	217	206	209
Supplemental cash flow information:
Income taxes paid	5	4	14
Interest paid	$ 110	$ 111	$ 111