v3.25.1
Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Increase (Decrease) in AOCI [Roll Forward]        
Accumulated other comprehensive income (loss), beginning of period $ (381)      
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax (141) $ (6) $ 627  
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 164 (137) (245)  
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent 23 (143) 382  
Accumulated other comprehensive income (loss), end of period (358) (381)    
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax (38) (47) (127)  
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax 0 0 0  
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent (38) (47) (127)  
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax (89) 74 675  
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax 167 (131) (245)  
Change in fair value of effective portion of hedges, net of tax provision (benefit), included in other comprehensive (loss) income 78 (57) 430  
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax (14) (33) 79  
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax (3) (6) 0  
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent (17) (39) 79  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 4,515 3,810 3,454 $ 2,509
Currency Translation [Member]        
Increase (Decrease) in AOCI [Roll Forward]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (378) (340) (293) (166)
Cash Flow Hedges [Member]        
Increase (Decrease) in AOCI [Roll Forward]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 16 (62) (5) (435)
Postretirement Benefit Plans [Member]        
Increase (Decrease) in AOCI [Roll Forward]        
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 4 21 60 (19)
AOCI Attributable to Parent        
Increase (Decrease) in AOCI [Roll Forward]        
Change in fair value of effective portion of hedges, net of tax provision (benefit), included in other comprehensive (loss) income 78 (57) 430  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ (358) $ (381) $ (238) $ (620)