v3.26.1
Segment, Geographical Area, Major Customer and Major Supplier Information (Selected Operating Results) (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Segment Reporting Information [Line Items]      
Net sales $ 18,434 $ 17,149 $ 16,210
Cost of goods sold (exclusive of depreciation and amortization) 15,587 14,469 13,704
Selling, general and administrative expenses 697 695 717
Adjusted EBITDA 1,645 1,802 1,873
Depreciation and amortization 616 575 554
Income tax provision (benefit) 1 159 218
Capital expenditures 2,343 1,689 1,358
Investment in and advances to non–consolidated affiliates 961 912  
Total assets 20,946 16,515  
Net sales – third party      
Segment Reporting Information [Line Items]      
Net sales 17,970 16,721 15,772
Net sales – intersegment      
Segment Reporting Information [Line Items]      
Net sales 1,525 648 442
Operating Segments      
Segment Reporting Information [Line Items]      
Net sales 19,495 17,369 16,214
Depreciation and amortization 639 586 567
Income tax provision (benefit) (33) 186 152
Capital expenditures 2,381 1,733 1,407
Investment in and advances to non–consolidated affiliates 961 912  
Total assets 19,240 15,259  
Operating Segments | North America Segment      
Segment Reporting Information [Line Items]      
Net sales 7,932 7,033 6,717
Cost of goods sold (exclusive of depreciation and amortization) 7,171 6,020 5,642
Selling, general and administrative expenses 279 297 301
Other segment items 47 76 25
Adjusted EBITDA 435 640 749
Depreciation and amortization 261 231 228
Income tax provision (benefit) (232) 4 (16)
Capital expenditures 2,020 1,341 1,039
Investment in and advances to non–consolidated affiliates 0 0  
Total assets 9,859 6,638  
Operating Segments | North America Segment | Net sales – third party      
Segment Reporting Information [Line Items]      
Net sales 7,864 7,030 6,717
Operating Segments | North America Segment | Net sales – intersegment      
Segment Reporting Information [Line Items]      
Net sales 68 3 0
Operating Segments | Europe Segment      
Segment Reporting Information [Line Items]      
Net sales 5,272 4,606 4,426
Cost of goods sold (exclusive of depreciation and amortization) 4,713 4,057 3,901
Selling, general and administrative expenses 193 196 200
Other segment items (13) 47 4
Adjusted EBITDA 379 306 321
Depreciation and amortization 185 173 167
Income tax provision (benefit) 56 28 40
Capital expenditures 194 217 171
Investment in and advances to non–consolidated affiliates 585 542  
Total assets 4,835 4,303  
Operating Segments | Europe Segment | Net sales – third party      
Segment Reporting Information [Line Items]      
Net sales 4,972 4,575 4,359
Operating Segments | Europe Segment | Net sales – intersegment      
Segment Reporting Information [Line Items]      
Net sales 300 31 67
Operating Segments | Asia Segment      
Segment Reporting Information [Line Items]      
Net sales 3,430 3,047 2,610
Cost of goods sold (exclusive of depreciation and amortization) 2,968 2,559 2,162
Selling, general and administrative expenses 106 110 108
Other segment items 45 31 6
Adjusted EBITDA 311 347 334
Depreciation and amortization 102 94 91
Income tax provision (benefit) 45 55 36
Capital expenditures 76 105 121
Investment in and advances to non–consolidated affiliates 376 370  
Total assets 2,167 2,163  
Operating Segments | Asia Segment | Net sales – third party      
Segment Reporting Information [Line Items]      
Net sales 2,542 2,492 2,345
Operating Segments | Asia Segment | Net sales – intersegment      
Segment Reporting Information [Line Items]      
Net sales 888 555 265
Operating Segments | South America      
Segment Reporting Information [Line Items]      
Net sales 2,861 2,683 2,461
Cost of goods sold (exclusive of depreciation and amortization) 2,246 2,058 1,879
Selling, general and administrative expenses 84 98 110
Other segment items 10 23 0
Adjusted EBITDA 521 504 472
Depreciation and amortization 91 88 81
Income tax provision (benefit) 98 99 92
Capital expenditures 91 70 76
Investment in and advances to non–consolidated affiliates 0 0  
Total assets 2,379 2,155  
Operating Segments | South America | Net sales – third party      
Segment Reporting Information [Line Items]      
Net sales 2,592 2,624 2,351
Operating Segments | South America | Net sales – intersegment      
Segment Reporting Information [Line Items]      
Net sales 269 59 110
Intersegment eliminations      
Segment Reporting Information [Line Items]      
Adjusted EBITDA (1) 5 (3)
Depreciation and amortization (23) (11) (13)
Income tax provision (benefit) 34 (27) 66
Capital expenditures (38) (44) (49)
Investment in and advances to non–consolidated affiliates 0 0  
Total assets 1,706 1,256  
Intersegment eliminations | Net sales – third party      
Segment Reporting Information [Line Items]      
Net sales 464 428 438
Intersegment eliminations | Net sales – intersegment      
Segment Reporting Information [Line Items]      
Net sales $ (1,525) $ (648) $ (442)