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Leases - Lease Maturities (Details)
$ in Millions
Sep. 30, 2019
USD ($)
Operating Leases  
2019 (for the three months ended December 31, 2019) $ 9
2020 28
2021 18
2022 12
2023 10
Thereafter 8
Total lease payments 85
Less imputed interest (8)
Totals 77
Finance Leases  
2019 (for the three months ended December 31, 2019) 6
2020 23
2021 23
2022 22
2023 21
Thereafter 311
Total lease payments 406
Less imputed interest (165)
Totals $ 241