v3.26.1
Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Increase (Decrease) in Stockholders' Equity    
Beginning balance $ 5,184 $ 4,515
Other comprehensive income, net of tax 409 180
Ending balance 5,757 4,756
Total    
Increase (Decrease) in Stockholders' Equity    
Beginning balance (621) (358)
Other comprehensive income (loss) before reclassifications 170 262
Amounts reclassified from accumulated other comprehensive loss, net 240 (82)
Other comprehensive income, net of tax 410 180
Ending balance (211) (178)
Currency Translation    
Increase (Decrease) in Stockholders' Equity    
Beginning balance (265) (378)
Other comprehensive income (loss) before reclassifications (11) 213
Amounts reclassified from accumulated other comprehensive loss, net 0 0
Other comprehensive income, net of tax (11) 213
Ending balance (276) (165)
Cash Flow Hedges    
Increase (Decrease) in Stockholders' Equity    
Beginning balance (391) 16
Other comprehensive income (loss) before reclassifications 180 41
Amounts reclassified from accumulated other comprehensive loss, net 242 (70)
Other comprehensive income, net of tax 422 (29)
Ending balance 31 (13)
Postretirement Benefit Plans    
Increase (Decrease) in Stockholders' Equity    
Beginning balance 35 4
Other comprehensive income (loss) before reclassifications 1 8
Amounts reclassified from accumulated other comprehensive loss, net (2) (12)
Other comprehensive income, net of tax (1) (4)
Ending balance $ 34 $ 0