Non-Mineral Leases (Other Information) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Non-Mineral Leases [Abstract] | |||
| Operating cash flows from operating leases | $ 204 | $ 232 | $ 203 |
| Operating cash flows from finance leases | 6 | 11 | 27 |
| Financing cash flows from finance leases | 73 | 255 | 81 |
| Right-of-use assets obtained in exchange for operating lease liabilities | 174 | 250 | 499 |
| Right-of-use assets obtained in exchange for finance lease liabilities | $ 447 | $ 426 | $ 26 |
| X | ||||||||||
- Definition Amount of interest paid on finance lease liability. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cash outflow for principal payment on finance lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|