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Leases Future Minimum Lease Payments of Lessor Arrangements (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]  
2020 $ 159
2021 159
2022 112
2023 136
2024 128
2025 and thereafter 192
Total future lease payments 886
Sales-type and Direct Financing Leases, Lease Receivable, Fiscal Year Maturity [Abstract]  
2020 1,620
2021 1,432
2022 1,161
2023 801
2024 668
2025 and thereafter 1,671
Total future lease payments $ 7,353