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Investments - Schedule of Investments (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]    
Performance allocations $ 3,073 $ 3,554
AFS securities, at fair value $ 219,474 $ 218,644
Derivative asset, statement of financial position [Extensible Enumeration] Other assets Other assets
Consolidated Entity, Excluding VIE    
Schedule of Equity Method Investments [Line Items]    
Total Investments, including related parties – Retirement Services $ 364,104 $ 362,286
Asset Management    
Schedule of Equity Method Investments [Line Items]    
Investments, at fair value 2,161 1,696
Derivative assets 42 7
Asset Management | Consolidated Entity, Excluding VIE    
Schedule of Equity Method Investments [Line Items]    
Investments, at fair value 2,161 1,696
Equity method investments 1,329 1,278
Performance allocations 2,792 3,240
Other investments 12 12
Total Investments – Asset Management 6,294 6,226
Retirement Services    
Schedule of Equity Method Investments [Line Items]    
AFS securities, at fair value 190,376 192,597
Mortgage loans, at fair value 93,077 91,918
Derivative assets 8,352 9,190
Retirement Services | Consolidated Entity, Excluding VIE    
Schedule of Equity Method Investments [Line Items]    
Other investments 4,732 4,492
AFS securities, at fair value 219,474 218,644
Trading securities, at fair value 7,608 6,863
Equity securities, at fair value 763 1,088
Mortgage loans, at fair value 94,634 93,404
Investment funds 3,320 2,257
Policy loans 296 301
Funds withheld at interest 18,473 19,628
Derivative assets 8,352 9,190
Short-term investments 158 193
Total Investments, including related parties – Retirement Services $ 357,810 $ 356,060