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Investments (excluding Consolidated Investment Entities) - Evaluating Securities for Impairments and Debt Restructuring (Narrative) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) loan	Jun. 30, 2023 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Intent impairments | $	$ 5	$ 7	$ 5	$ 7
Commercial mortgage loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Debt modifcations, number of contracts | loan			0	0

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Number of financing receivables that have been modified by troubled debt restructurings.

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Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings.

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