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Employee Benefit Obligations - Components, Amounts recognized in BS (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Defined Benefit Plan Liability    
Underfunded defined benefit pension liabilities $ 421 $ 423
Less current portion (21) (21)
Long-term defined benefit pension liabilities 400 402
Long-term retiree medical liabilities 89 94
Deferred compensation plans 279 286
Other 72 65
Total employee benefit obligations $ 840 $ 847