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Software - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Computer Software      
Impairment of computer software $ 81 $ 31 $ 136
incremental computer software amortization 18 75 76
Amortization expense for intangible assets with finite lives 467 486 484
Software      
Computer Software      
Amortization expense for intangible assets with finite lives $ 588 $ 640 $ 637