| In millions, except per share items | Mar-31-23 | Mar-31-22 | Mar-31-21 | Mar-31-20 | Mar-31-19 | Mar-31-18 | Mar-31-17 | Mar-31-16 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | 172.4 | 71.9 | 92.6 | 111.8 | -50.9 | -20.4 | -1.4 | 129.7 |
| Depreciation and amortization | 63.4 | 66.4 | 68.5 | 66.3 | 65.2 | 65.3 | 65.1 | 42.6 |
| Stock-based compensation | 4.3 | 3.3 | 3.4 | 3.2 | 5.5 | 5.1 | 4.4 | 4.1 |
| Change in working capital [+] | -16.0 | -7.7 | 14.3 | -25.9 | -21.3 | 12.6 | 8.9 | -38.1 |
| Accounts receivable | -2.4 | -0.7 | 0.6 | 0.6 | -1.0 | -0.3 | 0.1 | 22.7 |
| Inventories | -0.4 | -0.3 | 0.0 | 0.1 | -0.1 | 0.6 | -0.3 | 1.1 |
| Other current assets | -0.1 | -2.6 | -1.2 | -0.2 | -0.5 | -0.6 | 0.3 | -0.5 |
| Accounts payable | 0.6 | -0.1 | 0.2 | 1.5 | 0.8 | -0.6 | 0.7 | 1.0 |
| Accrued expenses | 2.5 | -4.9 | 4.3 | -2.1 | -3.0 | -2.4 | -1.2 | 9.0 |
| Other | -16.3 | 0.8 | 10.3 | -25.7 | -17.4 | 15.9 | 9.2 | -71.5 |
| Other operating activities | 0.0 | -15.3 | -8.1 | 13.6 | 10.5 | -5.4 | -24.8 | 12.8 |
| Cash from operations | 224.1 | 118.7 | 170.6 | 169.0 | 8.9 | 57.2 | 52.1 | 151.0 |
| |
| Capital expenditures [+] | -68.8 | -23.2 | -9.5 | -20.0 | -4.0 | -0.4 | -1.9 | -895.5 |
| Purchases of property and equipment | -68.8 | -23.2 | -9.5 | -19.9 | -4.0 | -0.3 | -1.9 | -895.1 |
| Capitalized product costs | 0.0 | | 0.0 | -0.1 | 0.0 | -0.1 | 0.0 | -0.5 |
| Sales of property and equipment | | 90.5 | | | | | | 2.7 |
| Sales of short-term investments, net [+] | | -2.3 | 10.3 | | -0.5 | | | |
| Purchases of short-term investments | | -2.3 | -4.7 | | -0.5 | | | |
| Sales of short-term investments | | | 15.0 | | | | | |
| Other cash from investing | -7.6 | 3.7 | 0.3 | -13.1 | | | | -17.6 |
| Cash from investing | -76.3 | 68.8 | 1.0 | -33.1 | -4.5 | -0.4 | -1.9 | -910.4 |
| |
| Cash dividends paid | -220.6 | -80.1 | | | | | | |
| Repurchase of common stock, net | -1.7 | -21.4 | -126.3 | -50.6 | -1.3 | -1.2 | -13.0 | -20.9 |
| Financing costs | -6.5 | -1.7 | -4.2 | 0.0 | -0.6 | -3.1 | -0.1 | -14.0 |
| Other cash from financing | -19.5 | 64.6 | -52.4 | -64.0 | -66.3 | 2.8 | -66.5 | 608.0 |
| Cash from financing | -235.2 | -35.2 | -174.5 | -114.7 | -67.0 | 4.7 | -79.3 | 601.1 |
| |
| Free cash flow | 155.3 | 95.5 | 161.1 | 149.2 | 4.9 | 57.0 | 50.2 | -744.0 |
| Per share (diluted) | $3.86 | $2.37 | $3.23 | $2.75 | $0.09 | $1.05 | $0.93 | ($13.13) |
| |
| Cash paid for interest | | | | 32.5 | 36.9 | 28.0 | 24.5 | 8.4 |