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Goodwill and Intangible Assets - Changes in Goodwill and Intangible Assets (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2022
Goodwill    
Balance at January 1, 2022   $ 21,978
Currency   (666)
Acquisitions   791
Asset impairments   0
Balance at March 31, 2022   22,103
Intangible Assets, at cost    
Balance at January 1, 2022   20,290
Currency   (604)
Acquisitions   734
Asset impairments $ (32) (78)
Balance at June 30, 2022   $ 20,342