| In millions, except per share items | Jun-30-23 | Mar-31-23 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 |
| | 10-Q | 8-K | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q |
| Net income | | | 375.5 | 372.1 | 383.5 | 361.6 | 323.1 | 142.1 |
| Depreciation and amortization [+] | | | 110.5 | 127.6 | 127.4 | 126.3 | 124.1 | 107.1 |
| Depreciation | | | 47.3 | 59.9 | 60.3 | 59.9 | 59.6 | 47.0 |
| Amortization of intangible assets | | | 63.1 | 79.6 | 79.1 | 78.3 | 76.5 | 60.2 |
| Stock-based compensation | | | 11.7 | 11.4 | 11.1 | 11.1 | 11.0 | 11.1 |
| Tax benefit from stock-based compensation | | | | | -0.8 | | | |
| Deferred taxes | | | | | 10.9 | -10.5 | | |
| Change in working capital [+] | | | | | -145.6 | | | |
| Accounts receivable | | | | | -246.9 | | | |
| Inventories | | | | | -0.1 | | | |
| Accounts payable | | | | | 54.8 | | | |
| Other | | | | | 46.6 | | | |
| Other operating activities | | | -55.2 | -63.6 | -67.7 | -346.3 | -150.5 | 112.5 |
| Cash from operations | | | 306.9 | 312.0 | 318.8 | 373.5 | 522.7 | 796.2 |
| |
| Capital expenditures [+] | | | -47.2 | -39.5 | -36.2 | -39.7 | -38.8 | -44.1 |
| Purchases of property and equipment | | | -47.2 | -39.5 | -36.2 | -39.7 | -38.8 | -44.1 |
| Sales of property and equipment | | | 2.3 | 3.2 | 3.5 | 4.3 | 4.9 | 4.0 |
| Acquisitions | | | -89.0 | -96.8 | -118.2 | -119.1 | -103.0 | -72.1 |
| Other cash from investing | | | | | -2.2 | | -0.6 | |
| Cash from investing | | | -135.5 | -135.3 | -153.1 | -155.1 | -137.5 | -112.2 |
| |
| Cash dividends paid | | | -27.5 | -28.0 | -28.2 | -25.6 | -23.0 | -20.3 |
| Repurchase of common stock, net | | | -511.8 | -364.4 | -195.5 | -196.8 | -151.5 | -26.4 |
| Option exercises | | | 7.8 | 9.3 | 9.1 | 8.8 | 8.6 | 6.7 |
| Other cash from financing | | | -16.3 | -13.3 | -12.7 | -6.3 | -24.5 | -228.6 |
| Cash from financing | | | -563.5 | -415.0 | -245.5 | -237.4 | -207.7 | -282.0 |
| |
| Free cash flow | | | 259.7 | 272.5 | 282.6 | 333.7 | 483.9 | 752.1 |
| Per share (diluted) | | | $4.90 | $5.05 | $5.18 | $6.09 | $8.78 | $13.63 |
| |
| Cash paid for interest | | | 5.7 | 6.5 | 6.6 | 6.7 | 7.4 | 6.6 |