Related Party Transactions - Reinsurance Agreements (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Affiliated entity \| Voya Financial Partners, LLC (VFP)
Related Party Transaction [Line Items]
Distribution revenues	$ 27	$ 24	$ 26

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details