Shareholders' Equity - Repurchases Pursuant to 10b5-1 Plans and Open Market Repurchases (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Equity [Abstract]
Payment	$ 300	$ 0
Shares of common stock	3,900,000	0

Treasury Stock, Value, Acquired, Cost Method, Excluding Excise Tax

No definition available.

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Namespace Prefix:	voya_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration