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Goodwill and other intangible assets - Goodwill Roll Forward (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Goodwill [Roll Forward]    
Beginning balance $ 14,890 $ 14,689
Changes to goodwill resulting from acquisitions and divestitures, net(1) 651 251
Currency translation adjustments (12) (50)
Ending balance $ 15,529 $ 14,890