| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | 62.5 | 9.5 | 28.6 | 40.9 | 55.5 | 14.7 | 30.5 | 32.2 |
| Depreciation and amortization [+] | 70.7 | 72.6 | 72.3 | 60.8 | 57.5 | 55.3 | 43.9 | 45.7 |
| Depreciation | 16.5 | 18.0 | 18.7 | 18.5 | 20.1 | 20.5 | 18.7 | 19.8 |
| Amortization of intangible assets | 54.2 | 54.6 | 53.6 | 42.2 | 37.4 | 34.8 | 25.2 | 25.9 |
| Asset impairment charges | | | 0.3 | 4.2 | | | | |
| Stock-based compensation | 16.3 | 13.1 | 11.8 | 10.0 | 8.5 | 8.4 | 7.5 | 9.3 |
| Tax benefit from stock-based compensation | | | | | | | -4.1 | -0.9 |
| Deferred taxes | 3.0 | -14.2 | -6.3 | 2.1 | -40.0 | -2.9 | 2.3 | -0.3 |
| Change in working capital [+] | -31.7 | -21.7 | -1.4 | -20.1 | 5.5 | -10.5 | -21.1 | -10.5 |
| Accounts receivable | -9.2 | 13.9 | -13.9 | -17.5 | -13.6 | -6.4 | -9.6 | 5.3 |
| Inventories | -37.8 | -30.4 | -0.1 | -15.0 | -3.9 | 3.1 | -18.6 | -10.4 |
| Accounts payable | 4.9 | -3.0 | 0.0 | 12.1 | -0.3 | 2.1 | 11.5 | -3.4 |
| Income taxes | -1.7 | -1.6 | -1.9 | -2.2 | 4.3 | -0.2 | -1.4 | 5.3 |
| Other | 12.1 | -0.6 | 14.5 | 2.5 | 19.0 | -9.1 | -3.0 | -7.1 |
| Other operating activities | -9.2 | 5.2 | -10.2 | -23.2 | -21.4 | -25.1 | -8.0 | -10.4 |
| Cash from operations | 111.8 | 64.5 | 95.1 | 74.7 | 65.6 | 39.9 | 50.9 | 65.2 |
| |
| Capital expenditures [+] | -14.9 | -13.0 | -20.1 | -16.5 | -12.8 | -14.8 | -15.0 | -15.4 |
| Purchases of property and equipment | -14.9 | -13.0 | -20.1 | -16.5 | -12.8 | -14.8 | -15.0 | -15.4 |
| Sales of property and equipment | | | | | | 5.2 | | |
| Other cash from investing | | -0.6 | -367.6 | | -16.2 | -256.5 | -9.4 | -5.3 |
| Cash from investing | -14.9 | -13.6 | -387.7 | -16.5 | -29.1 | -266.0 | -24.4 | -20.7 |
| |
| Cash dividends paid | -23.3 | -22.8 | -22.6 | -22.4 | -22.3 | -22.2 | -22.1 | -22.0 |
| Repurchase of common stock, net | | | | | | | | -16.9 |
| Option exercises | 19.6 | 13.7 | 7.7 | 3.5 | 1.0 | | 0.2 | 1.8 |
| Financing costs | -2.0 | -3.2 | -16.2 | -0.9 | | -5.6 | -1.5 | |
| Other cash from financing | -60.7 | -18.7 | 315.0 | -47.2 | -11.6 | 199.2 | 8.2 | 14.2 |
| Cash from financing | -101.5 | -52.1 | 300.9 | -72.3 | -34.9 | 182.5 | -12.6 | -26.4 |
| |
| Free cash flow | 96.9 | 51.5 | 75.1 | 58.2 | 52.7 | 25.1 | 35.9 | 49.8 |
| Per share (diluted) | $3.01 | $1.75 | $2.55 | $2.01 | $1.87 | $0.90 | $1.29 | $1.79 |
| |
| Cash paid for interest | 21.8 | 30.4 | 27.3 | 19.7 | 16.2 | 13.8 | 5.4 | 5.5 |