Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2019	Feb. 14, 2020	Jun. 30, 2019
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-35897
Entity Registrant Name	Voya Financial, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	52-1222820
Entity Address, Address Line One	230 Park Avenue
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10169
City Area Code	212
Local Phone Number	309-8200
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 7.7
Entity Common Stock, Shares Outstanding		132,335,898
Documents Incorporated by Reference	Portions of Voya Financial, Inc.'s Proxy Statement for its 2020 Annual Meeting of Shareholders are incorporated by reference in the Annual Report on Form 10-K in response to Part III, Items 10, 11, 12, 13 and 14.
Entity Central Index Key	0001535929
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Common Stock, $.01 par value
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $.01 Par Value
Trading Symbol	VOYA
Security Exchange Name	NYSE
Depositary Shares
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/40
Trading Symbol	VOYAPrB
Security Exchange Name	NYSE