Supplemental financial information - Accrued expenses (Details) - USD ($) $ in Millions |
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Disclosure Text Block Supplement [Abstract] | ||
| Accrued construction retainage | $ 149 | $ 82 |
| Other | 497 | 520 |
| Total | $ 646 | $ 602 |
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- Definition Accrued Construction Retainage, Current No definition available.
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- References No definition available.
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- Definition Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Obligations not otherwise itemized or categorized in the footnotes to the financial statements that are due within one year or operating cycle, if longer, from the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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