| In millions, except per share items | Jun-30-23 | Dec-31-22 | 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 |
| Cash flows from operating activities: | | | | | | | | |
| Net earnings from continuing operations | 361.0 | | 173.8 | 287.6 | 22.6 | 207.4 | 157.5 | 269.9 |
| Adjustments to reconcile net earnings from continuing operations to cash flows from operating activities: | | | | | | | | |
| Depreciation and amortization of property, plant and equipment | | | 7.7 | 11.0 | 5.8 | 9.0 | 10.4 | 13.1 |
| Amortization of intangible assets | | | 143.2 | 148.1 | 133.1 | 145.6 | 139.5 | 146.3 |
| Amortization of deferred financing costs | | | 3.2 | 3.1 | 3.4 | 3.3 | 3.4 | 3.4 |
| Non-cash stock compensation | | | 25.3 | 35.9 | 20.1 | 33.6 | 29.9 | 31.6 |
| Income tax provision | | | | | | | | |
| Changes in operating assets and liabilities, net of acquired businesses: | | | | | | | | |
| Accounts receivable | | | -26.8 | 82.0 | -64.8 | -69.6 | -12.6 | 54.3 |
| Unbilled receivables | | | | | | | | |
| Inventories | | | 4.0 | -27.7 | 10.7 | 3.7 | 3.3 | -2.1 |
| Accounts payable | | | 13.0 | 17.9 | | | 11.0 | 13.3 |
| Other accrued liabilities | | | 60.4 | -125.1 | | | 42.6 | -59.0 |
| Deferred revenue | | | 9.2 | 29.4 | 130.7 | -8.7 | -21.0 | 60.9 |
| Cash tax paid for gain on disposal of businesses | | | -377.9 | | | | | |
| Other, net | | | 5.7 | -24.6 | -5.5 | 4.4 | -10.4 | -14.9 |
| Cash provided by operating activities from continuing operations | | | -142.8 | 473.8 | 336.5 | 334.2 | 279.6 | 525.9 |
| Cash provided by operating activities | 295.0 | | -64.2 | 475.3 | 579.5 | 447.3 | 425.5 | 559.6 |
| |
| Cash flows from (used in) investing activities: | | | | | | | | |
| Acquisitions of businesses, net of cash acquired | | | -205.7 | -53.2 | -197.6 | -3.9 | -15.5 | |
| Capital expenditures | | | -6.6 | -7.1 | -6.0 | -5.3 | -5.7 | -7.1 |
| Capitalized software expenditures | | | -7.5 | -7.5 | -7.4 | -7.0 | -8.1 | -7.2 |
| Other, net | | | | | -0.1 | 0.2 | -1.5 | -0.1 |
| Cash used in investing activities from continuing operations | | | -219.8 | -67.8 | -211.0 | -16.0 | -30.8 | 12.7 |
| Cash provided by (used in) investing activities | | | -233.2 | 2,938.2 | -100.5 | -20.2 | -32.9 | 10.7 |
| |
| Cash flows used in financing activities: | | | | | | | | |
| Payments under revolving line of credit, net | | | -470.0 | | | | | |
| Cash dividends to stockholders | | | -65.4 | -65.3 | -59.5 | -59.1 | -59.0 | -58.8 |
| Proceeds from stock-based compensation, net | | | 19.9 | 21.0 | | | 40.8 | 4.4 |
| Treasury stock sales | | | 3.0 | 5.5 | 3.3 | 3.6 | 3.5 | 4.7 |
| Other | | | -0.2 | | -0.1 | 0.2 | | -0.1 |
| Cash flows used in financing activities from continuing operations | | | -42.7 | -508.8 | -465.9 | -406.6 | -389.7 | -544.8 |
| Cash flows used in financing activities | | | -42.7 | -520.2 | -472.6 | -406.3 | -389.4 | -545.2 |
| Effect of foreign currency exchange rate changes on cash | | | -25.6 | | | | | |