| Fiscal period | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 |
|---|
| Period End Date | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 | 12/31/2014 | 12/31/2013 | 12/31/2012 | 12/31/2011 |
|---|
| Revenue from operations | 4,015.13 | 4,109.11 | 4,043.70 | 3,358.11 | 2,991.52 | 2,972.44 | 2,787.90 | 2,337.65 | 2,134.58 | 1,903.80 |
| Total Revenues | 4,015.13 | 4,109.11 | 4,043.70 | 3,358.11 | 2,991.52 | 2,972.44 | 2,787.90 | 2,337.65 | 2,134.58 | 1,903.80 |
| Purchased transportation | 97.95 | 89.64 | 96.02 | 84.75 | 74.05 | 116.30 | 129.31 | 106.44 | 94.52 | 84.52 |
| Depreciation and amortization | 261.26 | 253.68 | 230.36 | 205.76 | 189.87 | 165.34 | 146.47 | 127.07 | 110.74 | 90.82 |
| Salaries, wages and benefits | 2,053.89 | 2,122.46 | 2,075.60 | 1,802.44 | 1,652.06 | 1,569.79 | 1,381.28 | 1,170.77 | 1,066.55 | 956.08 |
| Insurance and claims | 42.36 | 52.55 | 44.12 | 41.72 | 37.86 | 37.37 | 36.15 | 30.91 | 29.68 | 27.69 |
| Communications and utilities | 31.54 | 29.60 | 31.07 | 27.75 | 27.90 | 26.91 | 25.51 | 23.14 | 19.98 | 18.10 |
| General supplies and expenses | 110.28 | 123.98 | 119.18 | 107.73 | 86.63 | 89.31 | 83.17 | 69.77 | 58.91 | 49.90 |
| Building and office equipment rents | -- | -- | -- | -- | 7.92 | 9.62 | 10.68 | 11.92 | 13.51 | 13.69 |
| Miscellaneous expenses, net | 20.59 | 28.55 | 20.61 | 22.51 | 15.98 | 12.38 | 17.95 | 2.39 | 9.37 | 10.46 |
| Operating supplies and expenses | (373.43) | (473.11) | (497.48) | (389.78) | (323.00) | (353.89) | (432.68) | (385.20) | (378.53) | (355.19) |
| Operating taxes and licenses | (116.94) | (116.84) | (112.21) | (99.78) | (92.43) | (93.29) | (83.42) | (71.60) | (67.53) | (63.28) |
| Total Operating Expenses | 3,108.25 | 3,290.41 | 3,226.64 | 2,782.23 | 2,507.68 | 2,474.20 | 2,346.59 | 1,999.21 | 1,849.33 | 1,669.73 |
| Operating Income (Loss) | 906.88 | 818.71 | 817.05 | 575.89 | 483.84 | 498.24 | 441.31 | 338.44 | 285.25 | 234.07 |
| Interest expense | 2.78 | 0.38 | 0.19 | 2.15 | 4.33 | 5.21 | 6.61 | 9.62 | 11.54 | 14.07 |
| Interest income | 1.83 | 6.76 | 3.11 | 0.74 | 0.06 | 0.21 | 0.11 | 0.15 | 0.11 | 0.18 |
| Other income (expense) net | (4.57) | (1.14) | (4.46) | 1.36 | (1.97) | (3.22) | (2.29) | (0.28) | (0.73) | (0.10) |
| Total Non-Operating Income/Expense | 5.52 | (5.24) | 1.54 | 0.05 | 6.25 | 8.22 | 8.79 | 9.75 | 12.16 | 13.99 |
| Income before income taxes and cumulative effect of accounting change | 901.36 | 823.95 | 815.51 | 575.83 | 477.59 | 490.02 | 432.51 | 328.69 | 273.10 | 220.08 |
| Current-State | 53.22 | 42.44 | 38.65 | -- | 20.11 | 21.25 | 15.86 | 15.64 | 11.89 | 9.80 |
| Deferred:Federal | (35.37) | 12.01 | 49.13 | -- | 29.35 | 38.55 | 21.54 | 28.59 | 14.98 | 39.93 |
| Deferred:State | (5.64) | 1.14 | 8.58 | -- | 5.45 | 5.09 | 4.00 | 4.14 | 2.70 | 3.41 |
| Provision for income taxes | 228.68 | 208.43 | 209.85 | 112.06 | 181.82 | 185.33 | 165.00 | 122.57 | 103.65 | 80.61 |
| Current-Federal | 216.47 | 152.84 | 113.49 | -- | 126.90 | 120.44 | 123.60 | 74.20 | 74.07 | 27.47 |
| Income Before Cumulative Effect Of Accounting Change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Income (Loss) Available to Common Shareholders | 672.68 | 615.52 | 605.67 | 463.77 | 295.77 | 304.69 | 267.51 | 206.11 | 169.45 | 139.47 |
| Basic earnings per share before cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Earnings Per Share (Basic) | 5.71 | 5.11 | 4.93 | 3.75 | 2.37 | 2.38 | 2.07 | 1.59 | 1.31 | 1.09 |
| Diluted earnings per share before cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Earnings Per Share (Diluted) | 5.68 | 5.10 | 4.92 | 3.75 | 2.37 | 2.38 | 2.07 | 1.59 | 1.31 | 1.09 |
| Weighted Average Shares Outstanding (Basic) | 117.74 | 120.41 | 122.89 | 123.46 | 124.67 | 128.07 | 129.24 | 129.25 | 129.25 | 128.58 |
| Weighted Average Shares Outstanding (Diluted) | 118.49 | 120.61 | 123.03 | 123.61 | 124.73 | 128.07 | 129.24 | 129.25 | 129.25 | 128.58 |