v3.26.1
Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance $ (18,083) $ (17,889) $ (18,354) $ (17,387)
Ending balance (18,060) (18,324) (18,060) (18,324)
Total        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 401 1,079 348 1,446
Other comprehensive (income) loss (102) (651) (49) (1,018)
Ending balance 299 428 299 428
Foreign Currency Translation        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 539 1,306 465 1,684
Other comprehensive (income) loss (93) (712) (19) (1,090)
Ending balance 446 594 446 594
Cash Flow Hedges        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 16 13 17 16
Other comprehensive (income) loss 1 5 0 2
Ending balance 17 18 17 18
Defined Benefit Pension and Other Postretirement Benefit Plans        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 597 511 617 497
Other comprehensive (income) loss (10) 56 (30) 70
Ending balance 587 567 587 567
Other Adjustments        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance (751) (751) (751) (751)
Other comprehensive (income) loss 0 0 0 0
Ending balance $ (751) $ (751) $ (751) $ (751)