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Employee Benefit Obligations - Components, Amounts recognized in BS (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Defined Benefit Plan Liability    
Underfunded defined benefit pension liabilities $ 456 $ 423
Less current portion (22) (21)
Long-term defined benefit pension liabilities 434 402
Long-term retiree medical liabilities 90 94
Deferred compensation plans 267 286
Other 33 65
Total employee benefit obligations $ 824 $ 847