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Goodwill and Other Intangible Assets Amortization Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]      
Amortization expense $ 682 $ 475 $ 391
Continuing Operations [Member]      
Finite-Lived Intangible Assets [Line Items]      
2021 720    
2022 698    
2023 619    
2024 605    
2025 569    
Trademarks [Member]      
Finite-Lived Intangible Assets [Line Items]      
Amortization expense 19    
Estimated future annual amortization expense $ 75