Debt - Interest Expense (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
| Debt Disclosure [Abstract] | ||||
| Total interest cost | $ 246 | $ 246 | $ 759 | $ 718 |
| Capitalized interest | (25) | (15) | (68) | (70) |
| Total interest expense, net of capitalized interest | $ 221 | $ 231 | $ 691 | $ 648 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of interest capitalized during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Total interest costs incurred during the period and either capitalized or charged against earnings. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|