Schedule II - Condensed Financial Information of Parent - Financing Agreements (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Short-Term Debt, Total	$ 586	$ 399
Payments of financing costs	1	1	$ 1
Long-term debt	2,104	2,502
Current portion of long-term debt	586	399
Notes Payable \| 8.42% Equitable of Iowa Companies Capital Trust II Notes, due 2027
Debt Instrument [Line Items]
Long-term debt	$ 13	13
Annual interest rate on loan	8.42%
Debentures \| Voya Holdings Debentures
Debt Instrument [Line Items]
Long-term debt	$ 218	218
Parent
Debt Instrument [Line Items]
Intercompany financing - Subsidiaries	607	176
Short-Term Debt, Total	1,054	575
Outstanding borrowings	0
Long-term debt	1,426	1,871
Current portion of long-term debt	447	$ 399
Parent \| Unsecured and Committed
Debt Instrument [Line Items]
Revolving lines of credit, capacity	500
Parent \| Notes Payable \| Voya Holdings Inc. \| 8.42% Equitable of Iowa Companies Capital Trust II Notes, due 2027 \| Financial Guarantee
Debt Instrument [Line Items]
Long-term debt	$ 13

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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