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Leases - Schedule of Information About Company's Operating Leases (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Maturity of Lease Liabilities    
2020 $ 58  
2021 54  
2022 48  
2023 39  
2024 37  
Thereafter 1,208  
Total undiscounted operating lease payments 1,444  
Less: Imputed interest (894)  
Present value of operating lease liabilities 550  
Balance Sheet Classification    
Current lease liabilities (recorded in other current liabilities) 57  
Long-term lease liabilities 493 $ 0
Total operating lease liabilities $ 550  
Other Information    
Weighted-average remaining lease term for operating leases 33 years  
Weighted-average discount rate for operating leases 5.00%