| Document and Entity Information | Nov. 15, 2021 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001535929 |
| Document Type | 8-K |
| Document Period End Date | Nov. 15, 2021 |
| Entity Registrant Name | VOYA FINANCIAL, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-35897 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Stock, $.01 Par Value |
| Trading Symbol | VOYA |
| Security Exchange Name | NYSE |
| Depositary Shares Each Representing A 140th Interest In A Share Of 5.35 Fixed Rate Not Cumulative Preferred Stock Series B 0.01 Par Value [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Depositary Shares, each representing a 1/40th interest in a share of 5.35% Fixed-Rate Non-Cumulative Preferred Stock, Series B, $0.01 par value |
| Trading Symbol | VOYAPrB |
| Security Exchange Name | NYSE |
