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Other Financial Data - Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Balance at beginning of period $ (23)    
Total other comprehensive income (loss), net of tax (156) $ 67 $ (6)
Balance at end of period 131 (23)  
Foreign Currency Translation Adjustments      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Balance at beginning of period (384) (360) (410)
Other comprehensive income (loss) before reclassification adjustment (156) (30) 55
Tax benefit (expense) 1 6 (5)
Total other comprehensive income (loss), net of tax (155) (24) 50
Balance at end of period (539) (384) (360)
Defined Benefit Plans      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Balance at beginning of period (1,995) (2,086) (2,030)
Other comprehensive income (loss) before reclassification adjustment (76) 37 (130)
Tax benefit (expense) 18 (7) 30
Other comprehensive income (loss) before reclassification adjustment, net of tax (58) 30 (100)
Tax expense (21) (20) (14)
Reclassification adjustment into earnings, net of tax 57 61 44
Total other comprehensive income (loss), net of tax (1) 91 (56)
Balance at end of period (1,996) (1,995) (2,086)
Reclassification adjustment - Actuarial net losses into Other income (expense)      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Reclassification adjustment 80 89 76
Reclassification adjustment - Prior service benefits into Other income (expense)      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Reclassification adjustment (2) (8) (18)
Total Accumulated other comprehensive loss      
Accumulated Other Comprehensive Income (Loss) [Roll Forward]      
Balance at beginning of period (2,379) (2,446) (2,440)
Total other comprehensive income (loss), net of tax (156) 67 (6)
Balance at end of period $ (2,535) $ (2,379) $ (2,446)