| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K/A | 10-K | 10-K | 10-K |
| Cash flows from operating activities | | | | | | | | |
| Loss from continuing operations | -561.9 | -383.0 | -599.4 | -38.1 | -13.1 | 10.5 | -10.1 | -7.6 |
| Net loss from continuing operations | -425.0 | -351.8 | -599.4 | | | | | |
| |
| Adjustments to reconcile net loss to net cash used in operating activities: | | | | | | | | |
| Depreciation and amortization | 36.7 | 37.7 | 44.0 | 20.8 | 8.2 | | | |
| Stock-based compensation | 52.5 | 53.2 | 50.7 | 1.1 | | | | 1.9 |
| Amortization of debt discount | 2.5 | 14.9 | 12.3 | 0.6 | 1.5 | 0.9 | 0.1 | 0.3 |
| Deferred income tax benefit | -1.7 | -2.7 | -9.7 | -5.3 | -2.1 | | | |
| Change in fair value of warrant liabilities | | | | -13.2 | 3.8 | 0.4 | | |
| Amortization of right-of-use assets | 3.1 | 1.0 | 0.7 | 0.2 | | | | |
| Other adjustments | 1.2 | 0.6 | -0.6 | -1.3 | | | | |
| Changes in operating assets and liabilities of business, net of acquisitions: | | | | | | | | |
| Accounts receivable, net | -9.8 | -15.0 | -12.6 | 7.7 | | 0.0 | | 0.0 |
| Prepaid expenses and other assets | -1.0 | -3.6 | -2.1 | -0.2 | | | 0.0 | 0.0 |
| Prepaid sports rights | -34.4 | -3.3 | | | | 0.0 | | |
| Accounts payable | 12.0 | 8.7 | -39.1 | 5.5 | 0.2 | 0.1 | 0.1 | 0.0 |
| Accrued expenses and other liabilities | 50.1 | 64.8 | 40.8 | -1.0 | 0.1 | 0.3 | | |
| Deferred revenue | 21.1 | 26.1 | 8.6 | | | | 0.0 | -0.1 |
| Lease liabilities | 1.2 | -0.1 | -0.7 | -0.2 | | | | |
| Net cash used in operating activities - continuing operations | -289.8 | -171.9 | -149.0 | 1.7 | -3.2 | -0.4 | -0.6 | -0.9 |
| |
| Net cash used in operating activities - discontinued operations | -26.9 | -24.0 | | | | -0.2 | 0.0 | |
| Net cash used in operating activities | -316.7 | -195.9 | -149.0 | 1.7 | -3.2 | -0.6 | -0.6 | -0.9 |
| |
| Cash flows from investing activities | | | | | | | | |
| Purchases of property and equipment | -1.1 | -3.4 | -0.2 | -0.2 | | 0.0 | | |
| Capitalization of Internal Use Software | -4.9 | -4.1 | 0.0 | | | | | |
| Net cash used in investing activities - continuing operations | -6.0 | -30.4 | -1.5 | 1.5 | | 0.0 | 0.2 | -0.3 |
| Net cash used in investing activities | -12.4 | -76.2 | -1.5 | 1.5 | | 0.0 | 0.2 | -0.3 |
| |
| Cash flows from financing activities | | | | | | | | |
| Proceeds from the issuance of common stock, net of offering costs | | | | | 3.1 | 0.2 | 0.3 | 0.3 |
| Repayments of notes payable and long-term borrowings | | | -0.3 | -0.2 | | | -0.1 | 0.0 |
| Net cash provided by financing activities - continuing operations | 296.3 | 512.0 | 279.1 | 4.4 | 3.1 | 0.6 | 0.5 | 1.1 |
| Net cash provided by financing activities | 296.3 | 512.0 | 279.1 | 4.4 | 3.1 | 0.6 | 0.5 | 1.1 |
| |
| Supplemental disclosure of cash flows information: | | | | | | | | |
| Interest paid | 13.8 | 8.0 | 5.4 | 0.2 | 0.6 | | 0.0 | 0.0 |
| Non-cash financing and investing activities: | | | | | | | | |
| Reclassification of the equity components of the 2026 Convertible Notes to liability upon adoption of ASU 2020-06 | 75.3 | | | | | | | |
| Cashless exercise of warrants | 5.2 | 16.5 | 98.1 | | | | | |