v3.26.3
SEGMENT INFORMATION - Schedule of Segment Financial Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Segment Reporting [Line Items]          
Total sales $ 3,120 $ 2,886 $ 9,249 $ 8,202  
Cost of sales (1,956) (1,884) (5,863) (5,362)  
Gross profit 1,164 1,002 3,386 2,840  
Selling, general & administrative expenses (383) (375) (1,184) (1,029)  
Engineering expenses (67) (59) (193) (155)  
Amortization expense (89) (77) (267) (219)  
Income (loss) from operations 625 491 1,742 1,437  
Interest expense and other, net (68) (66) (198) (136)  
Income (loss) before income taxes 557 425 1,544 1,301  
Depreciation and amortization 142 128 424 365  
Capital expenditures 74 55 182 138  
Segment assets 23,141 21,527 23,141 21,527 $ 22,069
Intersegment sales/(elimination)          
Segment Reporting [Line Items]          
Total sales (26) (27) (71) (72)  
Corporate Activities and Elimination          
Segment Reporting [Line Items]          
Total sales 0 0 0 0  
Cost of sales 0 0 0 0  
Gross profit 0 0 0 0  
Selling, general & administrative expenses (35) (38) (139) (126)  
Engineering expenses 0 0 0 0  
Amortization expense 0 0 0 0  
Income (loss) from operations (35) (38) (139) (126)  
Interest expense and other, net (68) (66) (198) (136)  
Income (loss) before income taxes (103) (104) (337) (262)  
Depreciation and amortization 4 4 11 11  
Capital expenditures 1 5 4 10  
Segment assets 1,538 1,602 1,538 1,602  
Freight Segment          
Segment Reporting [Line Items]          
Total sales 2,237 2,093 6,595 5,913  
Freight Segment | Operating Segments          
Segment Reporting [Line Items]          
Total sales 2,237 2,093 6,595 5,913  
Cost of sales (1,376) (1,343) (4,092) (3,781)  
Gross profit $ 861 $ 750 $ 2,503 $ 2,132  
Gross margin 38.50% 35.80% 37.90% 36.10%  
Selling, general & administrative expenses $ (216) $ (219) $ (654) $ (564)  
Engineering expenses (55) (45) (153) (119)  
Amortization expense (75) (72) (227) (200)  
Income (loss) from operations 515 414 1,469 1,249  
Interest expense and other, net 0 0 0 0  
Income (loss) before income taxes 515 414 1,469 1,249  
Depreciation and amortization 111 107 335 299  
Capital expenditures 45 36 106 92  
Segment assets 15,985 15,471 15,985 15,471  
Freight Segment | Intersegment sales/(elimination)          
Segment Reporting [Line Items]          
Total sales 15 13 40 37  
Transit Segment          
Segment Reporting [Line Items]          
Total sales 883 793 2,654 2,289  
Transit Segment | Operating Segments          
Segment Reporting [Line Items]          
Total sales 883 793 2,654 2,289  
Cost of sales (580) (541) (1,771) (1,581)  
Gross profit $ 303 $ 252 $ 883 $ 708  
Gross margin 34.50% 31.70% 33.30% 30.90%  
Selling, general & administrative expenses $ (132) $ (118) $ (391) $ (339)  
Engineering expenses (12) (14) (40) (36)  
Amortization expense (14) (5) (40) (19)  
Income (loss) from operations 145 115 412 314  
Interest expense and other, net 0 0 0  
Income (loss) before income taxes 145 115 412 314  
Depreciation and amortization 27 17 78 55  
Capital expenditures 28 14 72 36  
Segment assets 5,618 4,454 5,618 4,454  
Transit Segment | Intersegment sales/(elimination)          
Segment Reporting [Line Items]          
Total sales $ 11 $ 14 $ 31 $ 35