Basis of Presentation and Significant Accounting Policies - Total Lease Cost (Details) $ in Millions |
12 Months Ended |
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Dec. 31, 2019
USD ($)
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Operating lease cost | $ 416 |
| Variable lease cost | 328 |
| Sublease income | (45) |
| Total lease cost | $ 700 |
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- Definition Amount of lease cost recognized by lessee for lease contract. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition Amount of sublease income excluding finance and operating lease expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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