v3.26.1
Accumulated other comprehensive loss - Schedule of AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance $ 13,254 $ 9,914
Total other comprehensive income (loss), net of tax (53) 17
Ending balance 13,088 9,750
Foreign Currency Translation Adjustment    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (431) (634)
Other comprehensive income (loss) before reclassifications (64) 16
Amounts reclassified from Accumulated other comprehensive loss to Net income 0 0
Total other comprehensive income (loss), net of tax (64) 16
Ending balance (495) (618)
Cash Flow Hedges    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (1) (7)
Other comprehensive income (loss) before reclassifications 11 3
Amounts reclassified from Accumulated other comprehensive loss to Net income 2 (1)
Total other comprehensive income (loss), net of tax 13 2
Ending balance 12 (5)
Defined Benefit Pension Plans and Other Postretirement Benefit Plans    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance 41 35
Other comprehensive income (loss) before reclassifications 0 0
Amounts reclassified from Accumulated other comprehensive loss to Net income (2) (1)
Total other comprehensive income (loss), net of tax (2) (1)
Ending balance 39 34
Total    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (391) (606)
Other comprehensive income (loss) before reclassifications (53) 19
Amounts reclassified from Accumulated other comprehensive loss to Net income 0 (2)
Total other comprehensive income (loss), net of tax (53) 17
Ending balance (444) (589)
Foreign Currency Translation Adjustment, Noncontrolling Interest    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Total other comprehensive income (loss), net of tax 0 0
Cash Flow Hedges, Noncontrolling Interest    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Total other comprehensive income (loss), net of tax 0 0
Defined Benefit Pension and Other Postretirement Plans, Noncontrolling Interest    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Total other comprehensive income (loss), net of tax 0 0
Total AOCI, Noncontrolling Interest    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Total other comprehensive income (loss), net of tax $ 0 $ 0