| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 |
| | 10-K | 10-K | 10-K |
| Depreciation and amortization | 118.9 | 121.1 | 127.5 |
| Stock-based compensation | 24.2 | 24.9 | 22.3 |
| Deferred taxes | -17.6 | -9.6 | 18.1 |
| Change in working capital | 18.6 | -4.7 | -7.8 |
| Cash from operations | -91.2 | 113.2 | 160.1 |
| |
| Capital expenditures [+] | -58.4 | -53.9 | -34.1 |
| Purchases of property and equipment | -58.4 | -53.9 | -34.1 |
| Sales of property and equipment | 4.3 | 23.6 | 4.5 |
| Purchases of short-term investments, net | | 30.0 | -30.0 |
| Purchases of short-term investments | | -10.0 | -90.0 |
| Sales of short-term investments | | 40.0 | 60.0 |
| Cash from investing | 264.0 | -0.3 | -59.6 |
| |
| Cash dividends paid | -105.9 | -100.6 | -100.4 |
| Repurchase of common stock, net | -203.7 | -96.3 | -70.0 |
| Cash from financing | 89.8 | -545.0 | 172.2 |
| |
| Free cash flow | -149.6 | 59.3 | 126.0 |
| |