Insurance Subsidiaries - Statutory Equity and Income (Details) $ in Millions	12 Months Ended
Dec. 31, 2024 USD ($) subsidiary	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Insurance [Abstract]
Number of insurance subsidiaries \| subsidiary	2
Voya Retirement Insurance and Annuity Company ("VRIAC") (CT) \| Connecticut
Statutory Accounting Practices [Line Items]
Statutory Net Income (Loss)	$ 640	$ 577	$ 549
Statutory Capital and Surplus	2,033	1,955
ReliaStar Life Insurance Company ("RLI") (MN) \| Minnesota
Statutory Accounting Practices [Line Items]
Statutory Net Income (Loss)	163	401	$ 418
Statutory Capital and Surplus	$ 1,098	$ 1,447

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

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- Definition

The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 944
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477908/944-505-50-1

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- Definition

Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators.

+ References

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- Definition

Number Of Subsidiaries

+ References

No definition available.

+ Details

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