Leases - Other Information Related to Leases (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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Jan. 01, 2019 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Supplemental cash flows information: | |||
| Operating cash flows from operating leases | $ 63 | $ 53 | |
| Right-of-use assets obtained in exchange for lease obligations 1) | |||
| Operating leases | $ 188 | $ 50 | $ 279 |
| Weighted average remaining lease term | |||
| Operating leases (in years) | 6 years | 6 years | |
| Weighted average discount rate: | |||
| Operating Lease, Weighted Average Discount Rate, Percent | 3.00% | 3.00% | |
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- Definition Right-Of-Use Assets Obtained In Exchange For Lease Obligations [Abstract] No definition available.
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- Definition Supplemental Cash Flows Information [Abstract] No definition available.
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- Definition Weighted Average Discount Rate [Abstract] No definition available.
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- Definition Weighted Average Remaining Lease Term [Abstract] No definition available.
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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