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Goodwill and Intangible Assets - Changes in Goodwill and Intangible Assets (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Goodwill        
Balance at January 1   $ 21,978,000,000 $ 21,895,000,000  
Currency   (757,000,000) (464,000,000)  
Acquisitions   2,529,000,000 547,000,000  
Asset impairments   0 0 $ 0
Balance at December 31 $ 23,450,000,000 23,450,000,000 21,978,000,000 21,895,000,000
Intangible Assets, at cost        
Balance at January 1   20,290,000,000 20,399,000,000  
Currency   (692,000,000) (465,000,000)  
Acquisitions   2,941,000,000 405,000,000  
Asset impairments   (101,000,000) (32,000,000)  
Balance at December 31 21,767,000,000 21,767,000,000 20,290,000,000 $ 20,399,000,000
Held for Sale        
Goodwill        
Held for Sale and Divestitures (292,000,000) (292,000,000) 0  
Intangible Assets, at cost        
Held for Sale and Divestitures $ (671,000,000) (671,000,000) 0  
Divestitures        
Goodwill        
Held for Sale and Divestitures   (8,000,000) 0  
Intangible Assets, at cost        
Held for Sale and Divestitures   $ 0 $ (17,000,000)