| 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 |
|---|
| Customer Services | 2,161.22 | 2,015.48 | 1,821.57 | 1,673.96 | 1,573.48 | 1,485.31 | 1,411.57 | 1,337.37 | 1,270.91 | 1,205.06 |
| Total Revenues | 2,161.22 | 2,015.48 | 1,821.57 | 1,673.96 | 1,573.48 | 1,485.31 | 1,411.57 | 1,337.37 | 1,270.91 | 1,205.06 |
| Cost of Services Provided | 1,048.59 | 993.59 | 894.44 | 819.94 | 772.35 | 735.98 | 707.74 | 678.46 | 647.58 | 616.84 |
| Depreciation and amortization | 88.33 | 81.11 | 66.79 | 56.58 | 50.90 | 44.52 | 43.51 | 39.57 | 38.66 | 37.50 |
| Sales, general and administrative | 656.21 | 623.38 | 550.70 | 503.43 | 490.53 | 463.74 | 441.71 | 428.29 | 407.49 | 388.71 |
| Pension curtailment | -- | 49.90 | -- | -- | -- | -- | -- | -- | 1.00 | -- |
| Accelerated stock vesting expense | (6.69) | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Interest expense | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain on sales of assets | (1.60) | 0.58 | 0.88 | 0.24 | 0.78 | 1.95 | 0.62 | 0.17 | 0.47 | (0.41) |
| Interest income | (5.08) | (6.92) | 0.22 | 0.26 | 0.16 | 0.16 | 0.25 | 0.39 | (0.01) | (0.51) |
| Income (loss) before income taxes | 354.72 | 261.16 | 310.73 | 294.50 | 260.64 | 243.18 | 219.48 | 191.61 | 176.64 | 161.10 |
| Deferred | -- | -- | -- | -- | -- | -- | 8.44 | 0.36 | -- | 0.78 |
| Current- Federal | 67.86 | 43.59 | 49.91 | 76.18 | 69.10 | 68.67 | 59.05 | 54.78 | 54.82 | 48.51 |
| Current- State | 18.38 | 15.34 | 13.60 | 13.41 | 12.95 | 11.34 | 9.94 | 9.26 | 8.72 | 7.72 |
| Current- Foreign | 8.87 | 6.11 | 7.93 | 7.16 | 14.46 | 7.53 | 4.39 | 3.88 | 3.65 | 3.37 |
| Deferred- Federal | (2.08) | (5.22) | 6.09 | 17.25 | (5.99) | 1.29 | 6.12 | (0.47) | (2.33) | 0.19 |
| Deferred- State | 0.31 | (1.52) | 1.96 | 1.61 | 2.89 | 2.08 | 2.16 | 0.73 | 0.48 | 0.53 |
| Deferred- Foreign | 0.55 | (0.49) | (0.42) | (0.22) | (0.15) | 0.13 | 0.16 | 0.09 | (0.03) | 0.07 |
| Current | -- | -- | -- | -- | -- | -- | 73.38 | 67.92 | -- | 59.60 |
| Provision for Income Taxes | 93.90 | 57.81 | 79.07 | 115.38 | 93.27 | 91.03 | 81.82 | 68.28 | 65.31 | 60.39 |
| Income before cumulative effect of change in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative Effect of Change In Accounting Principle, Net of Taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Income (Loss) Available to Common Shareholders | 260.82 | 203.35 | 231.66 | 179.12 | 167.37 | 152.15 | 137.66 | 123.33 | 111.33 | 100.71 |
| Income before cumulative effect of change in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of change in accounting principle- Basic | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income per share- Basic | 0.53 | 0.41 | 0.47 | 0.37 | 0.34 | 0.31 | 0.28 | 0.25 | 0.23 | 0.20 |
| Income before cumulative effect of change in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of change in accounting principle- Diluted | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income per share- Diluted | 0.53 | 0.41 | 0.47 | 0.37 | 0.34 | 0.31 | 0.28 | 0.25 | 0.23 | 0.20 |
| Weighted average shares outstanding - Basic | 491.60 | 491.22 | 490.94 | 490.47 | 491.05 | 491.81 | 492.06 | 493.02 | 493.76 | 495.73 |
| Weighted Average Shares Outstanding (Diluted) | 491.60 | 491.22 | 490.94 | 490.47 | 491.05 | 491.81 | 492.06 | 493.02 | 493.78 | 495.94 |