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Goodwill and Long-Lived Assets - Amortization Expense (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization expense three months ended 2020 $ 41 $ 20
Amortization expense remainder of 2020 (estimated) 133  
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
Finite-Lived Intangible Asset, Expected Amortization, Year One 174  
2023 163  
2024 151  
2025 141  
Finite-Lived Intangible Asset, Expected Amortization, Year Five $ 125