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Segment Information (Reconciliation Of Reportable Segments Operating Gain To Income Before Income Tax Expense Included In The Consolidated Statements Of Income) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Segment Reporting [Abstract]        
Reportable segments operating gain $ 201 $ 1,528 $ 5,755 $ 4,901
Net investment income 280 242 591 737
Net realized gains (losses) on financial instruments 247 1 241 90
Impairment recoveries (losses) recognized in income (18) (13) (64) (30)
Interest expense (198) (185) (593) (556)
Amortization of other intangible assets (93) (84) (269) (256)
(Loss) gain on extinguishment of debt (30) 0 (34) 1
Income before income tax expense $ 389 $ 1,489 $ 5,627 $ 4,887