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Reclassifications from Accumulated Other Comprehensive Income - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Equity [Abstract]        
Losses reclassified from accumulated other comprehensive earnings/(losses) to net earnings $ 86 $ 143 $ 252 $ 231