v3.25.1
Segment, Geographical Area, Major Customer and Major Supplier Information (Geographical Information - Net Sales) (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales $ 17,149 $ 16,210 $ 18,486
United States      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales 7,301 7,001 7,861
Asia and Other Pacific      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales 2,492 2,345 2,824
Brazil      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales 2,624 2,351 2,743
Canada      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales 157 154 148
Germany      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales 4,114 3,816 4,323
Other Europe      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net sales $ 461 $ 543 $ 587