v3.26.1
Shareholders' Equity and Redeemable Non-controlling Interests - Components 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 Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance     $ 10,093  
Total other comprehensive income, net of tax $ 272 $ 94 288 $ 179
Ending balance 10,680   10,680  
AOCI Attributable to Parent        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (1,294) (1,447) (1,310) (1,532)
Other comprehensive income (loss) before reclassifications     5 46
Tax expense before reclassifications     (28) 106
Amounts reclassified from accumulated other comprehensive loss     310 38
Tax (expense) benefit     1 (11)
Total other comprehensive income, net of tax 272 94 288 179
Ending balance (1,022) (1,353) (1,022) (1,353)
Financial Derivatives        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance     (133) (111)
Other comprehensive income (loss) before reclassifications     60 (47)
Tax expense before reclassifications     (16) 12
Amounts reclassified from accumulated other comprehensive loss     (10) 39
Tax (expense) benefit     3 (10)
Total other comprehensive income, net of tax     37 (6)
Ending balance (96) (117) (96) (117)
Defined Benefit Pension and Other Postretirement Benefit Plans        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance     (236) (281)
Other comprehensive income (loss) before reclassifications     0 (3)
Tax expense before reclassifications     0 1
Amounts reclassified from accumulated other comprehensive loss     (9) (1)
Tax (expense) benefit     (2) (1)
Total other comprehensive income, net of tax     (11) (4)
Ending balance (247) (285) (247) (285)
Foreign Currency Translation Adjustments        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance     (941) (1,140)
Other comprehensive income (loss) before reclassifications     (55) 96
Tax expense before reclassifications     (12) 93
Amounts reclassified from accumulated other comprehensive loss     329 0
Tax (expense) benefit     0 0
Total other comprehensive income, net of tax     262 189
Ending balance $ (679) $ (951) $ (679) $ (951)