Debt - Interest Expense (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Debt Disclosure [Abstract] | |||
| Total interest cost | $ 1,005 | $ 972 | $ 936 |
| Capitalized interest | (96) | (87) | (203) |
| Total interest expense, net of capitalized interest | $ 909 | $ 885 | $ 733 |
| X | ||||||||||
- References No definition available.
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- Definition Amount of interest costs capitalized disclosed as an adjusting item to interest costs incurred. No definition available.
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- Definition Total interest costs incurred during the period and either capitalized or charged against earnings. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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