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Leases - Schedule of Minimum Lease Commitments (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Leases [Abstract]  
2020 $ 167
2021 127
2022 101
2023 63
2024 36
Thereafter 241
Total lease commitments 735
Less: Interest (99)
Present value of lease liabilities $ 636