| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | 401.1 | 435.4 | 181.0 | 112.3 | 335.6 | 171.8 | 122.8 | 228.9 |
| Depreciation and amortization | 118.9 | 121.1 | 127.5 | 107.9 | 120.0 | 72.7 | 67.4 | 67.0 |
| Stock-based compensation | 24.2 | 24.9 | 22.3 | 21.8 | 21.6 | 21.8 | 21.7 | 21.3 |
| Deferred taxes | -17.6 | -9.5 | 18.1 | -28.3 | 47.7 | 102.3 | -25.1 | 39.7 |
| Change in working capital [+] | -16.0 | 27.0 | 16.5 | -40.7 | -32.1 | 40.0 | 20.6 | -31.0 |
| Accounts receivable | -46.8 | -58.8 | 138.5 | 1.9 | 4.8 | -10.1 | -6.2 | -2.4 |
| Inventories | -54.7 | -18.2 | 35.4 | -8.8 | -38.8 | 6.4 | 24.9 | -23.0 |
| Accounts payable | 53.3 | 59.3 | -102.6 | -13.6 | 37.0 | 17.5 | 5.5 | 3.3 |
| Accrued expenses | 28.8 | 53.8 | 4.8 | -35.9 | 40.9 | 30.8 | 9.6 | 6.1 |
| Income taxes | 25.2 | 20.3 | -31.2 | 24.4 | -16.2 | 8.6 | -4.4 | 2.9 |
| Other | -21.8 | -29.4 | -28.4 | -8.7 | -59.8 | -13.2 | -8.8 | -17.9 |
| Other operating activities | -662.2 | -100.4 | -55.9 | 197.4 | -79.0 | -91.1 | 110.7 | -96.6 |
| Cash from operations | -151.6 | 498.5 | 309.5 | 370.4 | 413.8 | 317.5 | 318.1 | 229.3 |
| |
| Capital expenditures [+] | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -49.0 | -51.5 | -39.6 |
| Purchases of property and equipment | | | | | | -49.0 | -51.5 | -39.6 |
| Sales of property and equipment | 4.3 | 23.6 | 4.5 | 3.1 | 1.9 | 22.3 | 0.9 | 4.4 |
| Acquisitions | | | -169.5 | -156.2 | -648.0 | -54.8 | | |
| Other cash from investing | 259.7 | -23.9 | -64.1 | -63.5 | -106.2 | -5.2 | | |
| Cash from investing | 264.0 | -0.3 | -229.1 | -216.6 | -752.3 | -86.7 | -50.6 | -35.2 |
| |
| Cash dividends paid | -105.9 | -100.6 | -100.4 | -93.2 | -83.5 | -78.4 | -77.2 | -76.6 |
| Repurchase of common stock, net | -203.7 | -96.3 | -70.0 | -79.9 | -50.1 | -25.0 | | -25.0 |
| Option exercises | 22.8 | 26.4 | 8.9 | 12.2 | 16.1 | 25.2 | -26.4 | 8.9 |
| Financing costs | | | -1.3 | | -5.4 | -2.6 | | |
| Other cash from financing | 438.4 | -334.6 | 233.1 | 60.7 | 136.4 | 45.2 | -49.6 | -33.3 |
| Cash from financing | 106.0 | -557.9 | 55.1 | -124.6 | -7.9 | -80.8 | -100.4 | -143.8 |
| |
| Free cash flow | -151.6 | 498.5 | 309.5 | 370.4 | 413.8 | 268.5 | 266.6 | 189.7 |
| Per share (diluted) | ($2.65) | $8.42 | $5.26 | $6.11 | $6.78 | $4.45 | $4.50 | $3.23 |
| |
| Cash paid for interest | 47.6 | 44.4 | 53.8 | 47.4 | 47.5 | 36.0 | 36.8 | 37.5 |
| Cash paid for income taxes | 147.2 | 56.3 | 46.5 | 35.1 | 58.4 | 84.1 | 69.8 | 51.1 |