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Reclassifications from Accumulated Other Comprehensive Income - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Equity [Abstract]        
Net gains/(losses) reclassified from accumulated other comprehensive earnings/(losses) to net earnings (net of tax) $ 35 $ 103 $ (6) $ 143