| 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 | 593.3 | 372.7 | -131.0 | 265.3 | 146.4 | 276.0 | 241.4 | 245.7 |
| Depreciation and amortization | 178.1 | 153.4 | 138.7 | 124.0 | 87.1 | 103.9 | 77.1 | 81.2 |
| Stock-based compensation | 29.7 | 27.1 | 17.3 | 16.7 | 15.9 | 16.1 | 20.8 | 28.1 |
| Tax benefit from stock-based compensation | | | | | | | | -8.4 |
| Deferred taxes | -21.8 | -17.6 | -49.8 | 31.0 | 92.2 | 62.5 | 43.3 | 48.3 |
| Change in working capital [+] | -212.6 | 232.7 | 33.6 | -37.6 | -70.5 | -10.2 | -42.9 | -67.5 |
| Accounts receivable | -85.1 | -19.9 | 41.4 | -30.2 | -30.7 | -1.1 | -11.4 | -24.0 |
| Inventories | -343.2 | 109.3 | -50.5 | -82.4 | -29.9 | -48.2 | -9.6 | -57.1 |
| Other current assets | -10.3 | -2.6 | 5.7 | -8.9 | 2.9 | 0.5 | -3.1 | -4.3 |
| Accounts payable | 134.2 | 64.5 | -32.7 | 61.4 | 21.7 | 39.2 | 5.3 | 13.0 |
| Accrued expenses | 73.8 | 75.3 | -44.7 | 17.6 | 13.5 | -20.8 | -31.9 | 5.7 |
| Income taxes | 18.0 | 6.1 | 114.4 | 4.9 | -48.0 | 20.2 | 7.8 | -0.8 |
| Other operating activities | 19.5 | 31.7 | 466.5 | -124.9 | 37.1 | -9.2 | 0.5 | -80.5 |
| Cash from operations | 586.2 | 800.0 | 475.3 | 274.5 | 308.2 | 439.1 | 340.2 | 246.9 |
| |
| Capital expenditures [+] | -267.1 | -182.4 | -232.6 | -180.2 | -178.0 | -193.9 | -114.1 | -124.8 |
| Purchases of property and equipment | -267.1 | -182.4 | -232.6 | -180.2 | -178.0 | -193.9 | -114.1 | -124.8 |
| Sales of property and equipment | 7.2 | 2.9 | 7.3 | 0.4 | 7.9 | 1.9 | 2.4 | 5.8 |
| Acquisitions | -1,138.6 | | -64.1 | -909.6 | -15.5 | -276.1 | -29.7 | -41.5 |
| Sales of short-term investments, net [+] | 111.8 | -55.9 | | | 70.0 | -13.6 | 191.0 | -70.5 |
| Purchases of short-term investments | | -55.9 | | | | -35.0 | -47.6 | -82.4 |
| Sales of short-term investments | 111.8 | | | | 70.0 | 21.4 | 238.6 | 11.9 |
| Other cash from investing | -67.2 | -11.5 | 484.1 | -17.9 | -63.3 | -4.3 | -92.3 | 251.3 |
| Cash from investing | -1,353.9 | -246.9 | 194.7 | -1,107.3 | -178.9 | -486.0 | -42.7 | 20.3 |
| |
| Cash dividends paid | -98.9 | -78.3 | -73.4 | -67.8 | -60.6 | -55.4 | -48.3 | -41.7 |
| Repurchase of common stock, net | -120.1 | -118.3 | -400.0 | -75.0 | -130.0 | -120.3 | -120.0 | -20.0 |
| Option exercises | 0.5 | 1.5 | 2.8 | 1.4 | 6.2 | 14.9 | 4.5 | 10.7 |
| Other cash from financing | 841.3 | -163.7 | -124.6 | 764.7 | -6.9 | 4.8 | 2.3 | 11.7 |
| Cash from financing | 621.8 | -361.8 | -600.8 | 620.5 | -203.7 | -185.8 | -170.5 | -60.7 |
| |
| Free cash flow | 319.1 | 617.6 | 242.7 | 94.3 | 130.2 | 245.2 | 226.1 | 122.1 |
| Per share (diluted) | $4.07 | $7.75 | $2.84 | $1.07 | $1.45 | $2.67 | $2.40 | $1.28 |
| |
| Cash paid for interest | 72.7 | 72.8 | 79.5 | 46.8 | 33.0 | 30.1 | 28.5 | 31.1 |
| Cash paid for income taxes | 146.7 | 111.5 | 18.2 | 21.7 | 73.5 | 32.6 | 32.8 | 45.5 |