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Leases Maturities of Operating Lease Liabilities (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Leases [Abstract] |
2020 | $ 355
2021 | 339
2022 | 307
2023 | 275
2024 | 226
2025 and thereafter | 923
Total future lease payments | 2,425
Less: Interest | 255
Lease liabilities | $ 2,170
Operating Lease, Liability, Statement of Financial Position [Extensible List] | us-gaap:AccruedLiabilitiesAndOtherLiabilities

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