| Fiscal period | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|
| Period End Date | 12/31/2024 | 12/31/2023 | 12/31/2022 | 12/31/2021 | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
|---|
| Revenue from operations | 5,814.81 | 5,866.15 | 6,260.08 | 5,256.33 | 4,015.13 | 4,109.11 | 4,043.70 | 3,358.11 | 2,991.52 | 2,972.44 |
| Total Revenues | 5,814.81 | 5,866.15 | 6,260.08 | 5,256.33 | 4,015.13 | 4,109.11 | 4,043.70 | 3,358.11 | 2,991.52 | 2,972.44 |
| Purchased transportation | 122.82 | 121.52 | 158.11 | 185.79 | 97.95 | 89.64 | 96.02 | 84.75 | 74.05 | 116.30 |
| Depreciation and amortization | 344.57 | 324.44 | 276.05 | 259.88 | 261.26 | 253.68 | 230.36 | 205.76 | 189.87 | 165.34 |
| Salaries, wages and benefits | 2,689.31 | 2,629.68 | 2,716.84 | 2,467.99 | 2,053.89 | 2,122.46 | 2,075.60 | 1,802.44 | 1,652.06 | 1,569.79 |
| Insurance and claims | 92.36 | 75.37 | 58.30 | 53.55 | 42.36 | 52.55 | 44.12 | 41.72 | 37.86 | 37.37 |
| Communications and utilities | 40.83 | 43.27 | 40.58 | 34.15 | 31.54 | 29.60 | 31.07 | 27.75 | 27.90 | 26.91 |
| General supplies and expenses | 176.55 | 162.42 | 160.00 | 136.06 | 110.28 | 123.98 | 119.18 | 107.73 | 86.63 | 89.31 |
| Building and office equipment rents | -- | -- | -- | -- | -- | -- | 6.45 | 7.98 | 7.92 | 9.62 |
| Miscellaneous expenses, net | 24.37 | 4.83 | 15.37 | 26.25 | 20.59 | 28.55 | 20.61 | 22.51 | 15.98 | 12.38 |
| Operating supplies and expenses | (635.32) | (718.33) | (852.96) | (567.62) | (373.43) | (473.11) | (491.03) | (381.80) | (323.00) | (353.89) |
| Operating taxes and licenses | (144.69) | (145.64) | (141.24) | (133.45) | (116.94) | (116.84) | (112.21) | (99.78) | (92.43) | (93.29) |
| Total Operating Expenses | 4,270.81 | 4,225.48 | 4,419.45 | 3,864.73 | 3,108.25 | 3,290.41 | 3,226.64 | 2,782.23 | 2,507.68 | 2,474.20 |
| Operating Income (Loss) | 1,544.00 | 1,640.67 | 1,840.63 | 1,391.60 | 906.88 | 818.71 | 817.05 | 575.89 | 483.84 | 498.24 |
| Interest expense | 0.21 | 0.46 | 1.56 | 1.73 | 2.78 | 0.38 | 0.19 | 2.15 | 4.33 | 5.21 |
| Interest income | 17.01 | 12.80 | 4.88 | 0.79 | 1.83 | 6.76 | 3.11 | 0.74 | 0.06 | 0.21 |
| Other income (expense) net | (3.20) | (5.23) | (2.60) | (2.24) | (4.57) | (1.14) | (4.46) | 1.36 | (1.97) | (3.22) |
| Total Non-Operating Income/Expense | (13.60) | (7.10) | (0.72) | 3.18 | 5.52 | (5.24) | 1.54 | 0.05 | 6.25 | 8.22 |
| Income before income taxes and cumulative effect of accounting change | 1,557.60 | 1,647.78 | 1,841.35 | 1,388.42 | 901.36 | 823.95 | 815.51 | 575.83 | 477.59 | 490.02 |
| Current-State | -- | -- | 83.61 | 70.80 | 53.22 | -- | 38.65 | 25.64 | 20.11 | 21.25 |
| Deferred:Federal | -- | -- | 51.86 | 26.38 | (35.37) | -- | 49.13 | (81.55) | 29.35 | 38.55 |
| Deferred:State | -- | -- | 10.15 | 3.78 | (5.64) | -- | 8.58 | (1.09) | 5.45 | 5.09 |
| Provision for income taxes | 371.52 | 408.27 | 464.19 | 354.05 | 228.68 | 208.43 | 209.85 | 112.06 | 181.82 | 185.33 |
| Current-Federal | -- | -- | 318.57 | 253.08 | 216.47 | -- | 113.49 | 169.05 | 126.90 | 120.44 |
| Income Before Cumulative Effect Of Accounting Change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Income (Loss) Available to Common Shareholders | 1,186.07 | 1,239.50 | 1,377.16 | 1,034.38 | 672.68 | 615.52 | 605.67 | 463.77 | 295.77 | 304.69 |
| Basic earnings per share before cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Earnings Per Share (Basic) | 5.51 | 5.67 | 6.13 | 4.47 | 2.86 | 2.56 | 2.46 | 1.88 | 1.19 | 1.19 |
| Diluted earnings per share before cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Earnings Per Share (Diluted) | 5.48 | 5.63 | 6.09 | 4.45 | 2.84 | 2.55 | 2.46 | 1.88 | 1.19 | 1.19 |
| Weighted Average Shares Outstanding (Basic) | 215.33 | 218.84 | 224.68 | 231.30 | 235.47 | 240.83 | 245.77 | 246.93 | 249.34 | 256.13 |
| Weighted Average Shares Outstanding (Diluted) | 216.49 | 220.18 | 226.16 | 232.82 | 236.99 | 241.22 | 246.06 | 247.22 | 249.46 | 256.13 |