Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Appropriated	Unappropriated	Total Voya Financial, Inc. Shareholders' Equity	Noncontrolling Interest	Previously Reported	Previously Reported Preferred Stock	Previously Reported Common Stock	Previously Reported Treasury Stock	Previously Reported Additional Paid-In Capital	Previously Reported Accumulated Other Comprehensive Income (Loss)	Previously Reported Appropriated	Previously Reported Unappropriated	Previously Reported Total Voya Financial, Inc. Shareholders' Equity	Previously Reported Noncontrolling Interest
Cumulative effect of changes in accounting:
Adjustment for adoption of ASU | Accounting Standards Update 2014-09	$ 84	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 84	$ 84	$ 0
Adjustment for adoption of ASU | Accounting Standards Update 2016-01	0	0	0	0	0	(28)	0	28	0	0
Balance - As adjusted	11,123	0	3	(3,827)	23,821	2,703	0	(12,607)	10,093	1,030
Beginning balance at Dec. 31, 2017											$ 11,039	$ 0	$ 3	$ (3,827)	$ 23,821	$ 2,731	$ 0	$ (12,719)	$ 10,009	$ 1,030
Comprehensive income (loss):
Net income (loss)	835	0	0	0	0	0	0	754	754	81
Reversal of Other Comprehensive Income (Loss) due to Sale of Annuity and CBVA	(79)	0	0	0	0	(79)	0	0	(79)	0
Other comprehensive income (loss), after tax	(1,926)
Other comprehensive income (loss), Other, net of tax	(1,847)	0	0	0	0	(1,847)	0	0	(1,847)	0
Less: Comprehensive income (loss) attributable to noncontrolling interest	81									81
Comprehensive income (loss)	(1,091)								(1,172)
Effect of transaction for entities under common control	(31)	0	0	0	(31)	0	0	0	(31)	0
Net consolidations (deconsolidations) of consolidated investment entities	(33)	0	0	0	0	0	0	0	0	(33)
Preferred stock issuance	319	0	0	0	319	0	0	0	319	0
Common stock issuance	3	0	0	0	3	0	0	0	3	0
Common stock acquired - Share repurchase	(750)	0	0	(850)	100	0	0	0	(750)	0
Dividends on preferred stock	0	0	0	0	0	0	0	0	0	0
Dividends on common stock	(5)	0	0	0	(5)	0	0	0	(5)	0
Share-based compensation	66	0	0	(28)	94	0	0	0	66	0
Contributions from (Distributions to) noncontrolling interest, net	(401)	0	0	0	0	0	0	0	0	(401)
Ending Balance at Sep. 30, 2018	9,200	0	3	(4,705)	24,301	777	0	(11,853)	8,523	677
Beginning balance at Jun. 30, 2018	9,242	0	3	(4,442)	23,951	943	0	(11,995)	8,460	782
Comprehensive income (loss):
Net income (loss)	165	0	0	0	0	0	0	142	142	23
Reversal of Other Comprehensive Income (Loss) due to Sale of Annuity and CBVA	0	0	0	0	0	0	0	0	0	0
Other comprehensive income (loss), after tax	(166)
Other comprehensive income (loss), Other, net of tax	(166)	0	0	0	0	(166)	0	0	(166)	0
Less: Comprehensive income (loss) attributable to noncontrolling interest	23									23
Comprehensive income (loss)	(1)								(24)
Effect of transaction for entities under common control	0	0	0	0	0	0	0	0	0	0
Net consolidations (deconsolidations) of consolidated investment entities	0	0	0	0	0	0	0	0	0	0
Preferred stock issuance	319	0	0	0	319	0	0	0	319	0
Common stock issuance	2	0	0	0	2	0	0	0	2	0
Common stock acquired - Share repurchase	(250)	0	0	(250)	0	0	0	0	(250)	0
Dividends on preferred stock	0	0	0	0	0	0	0	0	0	0
Dividends on common stock	(2)	0	0	0	(2)	0	0	0	(2)	0
Share-based compensation	18	0	0	(13)	31	0	0	0	18	0
Contributions from (Distributions to) noncontrolling interest, net	(128)	0	0	0	0	0	0	0	0	(128)
Ending Balance at Sep. 30, 2018	9,200	0	3	(4,705)	24,301	777	0	(11,853)	8,523	677
Beginning balance at Dec. 31, 2018	8,941	0	3	(4,981)	24,316	607	0	(11,732)	8,213	728
Comprehensive income (loss):
Net income (loss)	463	0	0	0	0	0	0	420	420	43
Other comprehensive income (loss), after tax	2,547	0	0	0	0	2,547	0	0	2,547	0
Less: Comprehensive income (loss) attributable to noncontrolling interest	43									43
Comprehensive income (loss)	3,010								2,967
Preferred stock issuance	293	0	0	0	293	0	0	0	293	0
Common stock issuance	3	0	0	0	3	0	0	0	3	0
Common stock acquired - Share repurchase	(936)	0	0	(936)	0	0	0	0	(936)	0
Dividends on preferred stock	(24)	0	0	0	(14)	0	0	(10)	(24)	0
Dividends on common stock	(23)	0	0	0	(23)	0	0	0	(23)	0
Share-based compensation	58	0	0	(38)	96	0	0	0	58	0
Contributions from (Distributions to) noncontrolling interest, net	(111)	0	0	0	0	0	0	0	0	(111)
Ending Balance at Sep. 30, 2019	11,211	0	3	(5,955)	24,671	3,497	0	(11,665)	10,551	660
Cumulative effect of changes in accounting:
Adjustment for adoption of ASU | Accounting Standards Update 2018-02	0	0	0	0	0	0	0	0	0	0
Beginning balance at Jun. 30, 2019	10,739	0	3	(5,663)	24,642	2,867	0	(11,785)	10,064	675
Comprehensive income (loss):
Net income (loss)	139	0	0	0	0	0	0	120	120	19
Other comprehensive income (loss), after tax	630	0	0	0	0	630	0	0	630	0
Less: Comprehensive income (loss) attributable to noncontrolling interest	19									19
Comprehensive income (loss)	769								750
Preferred stock issuance	0	0	0	0	0	0	0	0	0	0
Common stock issuance	1	0	0	0	1	0	0	0	1	0
Common stock acquired - Share repurchase	(250)	0	0	(290)	40	0	0	0	(250)	0
Dividends on preferred stock	(14)	0	0	0	(14)	0	0	0	(14)	0
Dividends on common stock	(20)	0	0	0	(20)	0	0	0	(20)	0
Share-based compensation	20	0	0	(2)	22	0	0	0	20	0
Contributions from (Distributions to) noncontrolling interest, net	(34)	0	0	0	0	0	0	0	0	(34)
Ending Balance at Sep. 30, 2019	11,211	0	3	(5,955)	24,671	$ 3,497	0	(11,665)	10,551	660
Cumulative effect of changes in accounting:
Adjustment for adoption of ASU | Accounting Standards Update 2018-02	$ 0	$ 0	$ 0	$ 0	$ 0		$ 0	$ (343)	$ 0	$ 0