| In millions, except per share items | Jun-30-23 | Mar-31-23 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Operating activities: | | | | | | | | |
| Net income (loss) | -36.4 | 0.2 | 19.7 | 13.5 | 44.0 | 24.9 | 78.2 | -46.9 |
| Adjustments to reconcile net income to net cash from operating activities: | | | | | | | | |
| Depreciation | 18.9 | 18.2 | 17.5 | 17.2 | 16.6 | 15.9 | 15.8 | 17.0 |
| Amortization of intangible assets | 85.6 | 85.1 | 85.1 | 85.1 | 85.2 | 85.2 | 85.2 | 85.2 |
| Amortization of the right-of-use asset | 1.5 | 1.4 | 1.6 | 1.7 | 1.7 | 1.7 | 1.8 | 1.7 |
| Stock-based compensation | 4.8 | 3.7 | 4.1 | 4.1 | 3.1 | 4.8 | 4.8 | 7.5 |
| Deferred income taxes | -50.6 | 3.4 | -79.4 | -24.1 | -35.3 | -15.0 | -67.2 | 47.4 |
| Non-cash interest costs | 2.5 | 2.6 | 2.6 | 2.6 | 2.6 | 2.8 | 3.7 | 2.9 |
| Gain on extinguishment of debt | | -36.8 | | | | 0.0 | 15.8 | |
| Gain on equity investments | | | | | -0.3 | | | |
| Loss on disposal of property and equipment | 0.1 | 0.2 | -1.7 | 2.7 | 0.0 | 0.6 | 1.7 | 0.1 |
| Loss (gain) on change in fair value of Private Placement Warrants and Unvested Founder Shares | 0.8 | 1.6 | | 5.1 | -12.7 | | | |
| Changes in assets and liabilities: | | | | | | | | |
| Accounts receivable, net | -0.8 | 11.9 | 21.7 | -15.8 | 21.7 | -33.3 | -5.4 | -7.0 |
| Prepaid expenses and other assets | 0.7 | -0.1 | 3.9 | 6.3 | 3.6 | -11.6 | 2.2 | 6.0 |
| Prepaid taxes | -11.3 | -4.6 | | | 5.1 | -5.0 | 54.1 | -54.1 |
| Operating lease obligation | -1.8 | -1.7 | 0.6 | -3.8 | -1.6 | -0.9 | -1.5 | -3.3 |
| Accounts payable, accrued expenses, legal contingencies and other | -6.3 | -20.9 | 82.2 | -53.9 | 61.3 | -39.6 | 54.7 | -104.5 |
| Net cash provided by operating activities | 7.7 | 64.2 | 109.0 | 40.8 | 194.8 | 33.3 | 167.0 | 33.5 |
| |
| Investing activities: | | | | | | | | |
| Purchases of property and equipment | -32.0 | -23.1 | -20.8 | -18.9 | -24.5 | -27.4 | -20.4 | -18.7 |
| Proceeds from sale of investment | | | | | 0.3 | | | 0.0 |
| Purchase of equity investments | | | | -15.0 | | | | |
| BST Acquisition, net of cash acquired | -141.3 | | | | | 0.2 | 0.1 | 0.2 |
| Net cash used in investing activities | -173.3 | -23.1 | -20.8 | -33.9 | -24.2 | -27.2 | -20.3 | -18.5 |
| |
| Financing activities: | | | | | | | | |
| Repurchase of 5.750% Notes | -3.3 | -3.3 | | -3.3 | -3.3 | | | |
| Repayments of Term Loan B | -3.3 | -3.3 | 6.6 | -3.3 | -3.3 | 2,341.0 | | |
| Taxes paid on settlement of vested share awards | 0.0 | -0.5 | -0.2 | -0.2 | -2.0 | -0.5 | -1.0 | -2.1 |
| Purchase of treasury stock | -7.4 | -5.7 | | | | -38.9 | -61.1 | |
| Net cash used in financing activities | -10.7 | -109.4 | -3.5 | -3.6 | -5.3 | -42.8 | -69.5 | -2.1 |
| Net (decrease) increase in cash, cash equivalents and restricted cash | -244.7 | | | 168.7 | | | | |
| |
| Cash and cash equivalents | | | | | | | | |
| |
| Noncash investing and financing activities: | | | | | | | | |
| Purchases of property and equipment not yet paid | -1.9 | 6.1 | 1.7 | -0.3 | 4.9 | -0.2 | 2.2 | -1.1 |
| Operating lease right-of-use assets obtained in exchange for operating lease liabilities | | | 2.2 | | 0.0 | 6.1 | -0.2 | 1.0 |
| Supplemental disclosure of cash flow information: | | | | | | | | |
| Interest | -99.8 | -61.7 | -48.8 | -92.8 | -46.2 | -94.1 | -13.8 | -100.8 |
| Income taxes, net of refunds | -52.4 | -3.1 | -32.2 | -69.6 | -2.8 | -29.9 | -32.9 | -65.8 |