LEASES - Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Millions |
6 Months Ended | |
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Jun. 30, 2021 |
Jun. 30, 2020 |
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| Leases [Abstract] | ||
| Operating cash flows from operating leases | $ 364 | $ 338 |
| Operating cash flows from finance leases | 7 | 10 |
| Financing cash flows from finance leases | 33 | 33 |
| Operating leases | 854 | 403 |
| Finance leases | $ 113 | $ 49 |
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- Definition Amount of interest paid on finance lease liability. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash outflow for principal payment on finance lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References 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 Amount of increase in right-of-use asset obtained in exchange for finance lease liability. 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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