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v3.20.1

Operations and Segmentation (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Commodity Group Information [Line Items] |  |
Freight revenues | $ 4,880 | $ 5,010
Subsidiary revenue | 214 | 223
Accessorial revenues | 117 | 133
Other revenues | 18 | 18
Total operating revenues | 5,229 | 5,384
Cargo and Freight [Member] |  |
Commodity Group Information [Line Items] |  |
Freight revenues | 4,880 | 5,010
Bulk [Member] |  |
Commodity Group Information [Line Items] |  |
Freight revenues | 1,534 | 1,620
Industrial [Member] |  |
Commodity Group Information [Line Items] |  |
Freight revenues | 1,894 | 1,839
Premium [Member] |  |
Commodity Group Information [Line Items] |  |
Freight revenues | 1,452 | 1,551
Mexico [Member] |  |
Commodity Group Information [Line Items] |  |
Freight revenues | $ 583 | $ 576

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