| In millions, except per share items | Dec-31-22 | Jan-01-22 | Jan-02-21 | Dec-28-19 | Dec-29-18 | Dec-30-17 | Dec-31-16 | Jan-02-16 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | -286.3 | 30.4 | 147.1 | 85.3 | 88.0 | 51.0 | 41.9 | 44.1 |
| Depreciation and amortization [+] | 47.9 | 33.3 | 34.8 | 37.2 | 36.6 | 25.5 | 13.6 | 15.3 |
| Depreciation | | | | | | | | 14.4 |
| Amortization | | | | | | | | 0.9 |
| Stock-based compensation | 31.9 | 21.7 | 30.0 | 23.7 | 25.8 | 19.8 | 16.0 | 14.2 |
| Tax benefit from stock-based compensation | | | | | | | -3.0 | -1.5 |
| Deferred taxes | 18.8 | -6.9 | 13.8 | -11.1 | -10.8 | -1.0 | 3.6 | -1.0 |
| Change in working capital [+] | 118.9 | -61.7 | 63.4 | 2.1 | -61.1 | -7.0 | 43.5 | -41.5 |
| Accounts receivable | 94.8 | 10.3 | -21.9 | 13.1 | -23.9 | -53.3 | 25.7 | -31.5 |
| Inventories | 49.4 | -151.2 | -24.5 | 7.3 | -58.5 | -1.5 | -1.0 | -14.0 |
| Accounts payable | -73.6 | 82.3 | 48.7 | -20.5 | 22.5 | 17.5 | 6.5 | 3.8 |
| Deferred revenues | | | | | | | 3.0 | -0.6 |
| Other | 48.3 | -3.1 | 61.1 | 2.3 | -1.1 | 30.3 | 9.3 | 0.7 |
| Other operating activities | -21.2 | -48.7 | -57.0 | -7.2 | -6.7 | -11.9 | 0.8 | -2.9 |
| Cash from operations | -90.0 | -32.0 | 232.0 | 130.1 | 71.7 | 76.3 | 116.4 | 26.7 |
| |
| Capital expenditures | -12.3 | -29.9 | -31.6 | -35.3 | -32.4 | -23.4 | -10.8 | -9.4 |
| Purchases of property and equipment | -12.3 | -29.9 | -31.6 | -35.3 | -32.4 | -23.4 | -10.8 | -9.4 |
| Acquisitions | | -71.4 | | -2.8 | | -148.8 | | |
| Sales of short-term investments, net [+] | 17.7 | 64.0 | 13.5 | 12.9 | 7.6 | 2.5 | -7.1 | 2.7 |
| Purchases of short-term investments | | | | | -6.4 | -10.6 | -16.6 | -17.8 |
| Sales of short-term investments | 17.7 | 64.0 | 13.5 | 12.9 | 14.0 | 13.1 | 9.5 | 20.5 |
| Other cash from investing | -3.2 | -10.8 | -4.2 | 4.4 | -1.5 | -0.3 | 22.1 | 4.6 |
| Cash from investing | 2.2 | -48.1 | -22.2 | -20.9 | -26.4 | -169.9 | 4.2 | -2.0 |
| |
| Repurchase of common stock, net | | -150.0 | -25.0 | | -50.0 | | -97.0 | -37.4 |
| Option exercises | 4.7 | 6.7 | 5.6 | 7.1 | 10.4 | 10.6 | 9.3 | 6.5 |
| Other cash from financing | 7.7 | 8.3 | 9.3 | 7.0 | 17.2 | 18.2 | 20.4 | 13.1 |
| Cash from financing | 2.9 | -148.4 | -21.3 | -0.1 | -43.2 | 7.6 | -86.0 | -30.8 |
| |
| Free cash flow | -102.3 | -61.9 | 200.4 | 94.7 | 39.3 | 52.9 | 105.6 | 17.3 |
| Per share (diluted) | ($3.76) | ($2.20) | $7.00 | $3.30 | $1.37 | $1.84 | $3.73 | $0.58 |