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v3.21.1

Segment Information - Segment Financial Information (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Segment Reporting Information [Line Items] |  |
Total sales | $ 1,830.2 | $ 1,929.9
Income (loss) from operations | 191.6 | 217.3
Interest expense and other, net | (33.4) | (68.1)
Income (loss) before income taxes | 158.2 | 149.2
Freight Segment |  |
Segment Reporting Information [Line Items] |  |
Total sales | 1,183.3 | 1,301.0
Transit Segment |  |
Segment Reporting Information [Line Items] |  |
Total sales | 646.9 | 628.9
Operating Segments | Freight Segment |  |
Segment Reporting Information [Line Items] |  |
Total sales | 1,195.7 | 1,313.5
Income (loss) from operations | 141.8 | 161.7
Interest expense and other, net | 0.0 | 0.0
Income (loss) before income taxes | 141.8 | 161.7
Operating Segments | Transit Segment |  |
Segment Reporting Information [Line Items] |  |
Total sales | 656.6 | 638.0
Income (loss) from operations | 70.1 | 68.6
Interest expense and other, net | 0.0 | 0.0
Income (loss) before income taxes | 70.1 | 68.6
Corporate Activities and Elimination |  |
Segment Reporting Information [Line Items] |  |
Total sales | (22.1) | (21.6)
Income (loss) from operations | (20.3) | (13.0)
Interest expense and other, net | (33.4) | (68.1)
Income (loss) before income taxes | (53.7) | (81.1)
Corporate Activities and Elimination | Freight Segment |  |
Segment Reporting Information [Line Items] |  |
Total sales | 12.4 | 12.5
Corporate Activities and Elimination | Transit Segment |  |
Segment Reporting Information [Line Items] |  |
Total sales | $ 9.7 | $ 9.1

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