| 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/A | 10-K | 10-K | 10-K | 10-K | 10-K |
| NET REVENUE | 484.6 | 440.3 | 376.3 | 436.9 | 439.1 | 440.0 | 456.2 | 450.9 |
| NET REVENUE growth | 10.1% | 17.0% | -13.9% | -0.5% | -0.2% | -3.5% | 1.2% | 2.1% |
| OPERATING EXPENSES: | | | | | | | | |
| Programming and technical including stock-based compensation of $7 and $20, respectively | 122.6 | 119.1 | | | | | | |
| Selling, general and administrative, including stock-based compensation of $239 and $31, respectively | 216.6 | 193.4 | 146.8 | 193.4 | 185.6 | 193.7 | 198.5 | 203.7 |
| Corporate selling, general and administrative, including stock-based compensation of $6,349 and $514, respectively | 56.3 | 51.4 | 37.7 | 40.9 | 35.9 | 45.0 | 50.6 | 52.0 |
| Depreciation and amortization | 10.0 | 9.3 | 9.7 | 17.0 | 33.2 | 34.0 | 34.2 | 35.4 |
| Impairment of long-lived assets | 40.7 | 2.1 | 84.4 | 10.6 | 21.3 | 29.1 | 1.3 | 41.2 |
| Total operating expenses | 389.9 | 323.8 | 344.7 | 349.8 | 365.5 | 387.3 | 368.1 | 414.7 |
| Operating income | 94.7 | 116.4 | 31.6 | 87.1 | 73.6 | 52.7 | 88.1 | 36.2 |
| Operating margin | 19.5% | 26.4% | 8.4% | 19.9% | 16.8% | 12.0% | 19.3% | 8.0% |
| INTEREST INCOME | 0.9 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 |
| INTEREST EXPENSE | -61.8 | -65.7 | -74.5 | -81.4 | -76.7 | -79.4 | -81.6 | -80.0 |
| (GAIN) LOSS ON RETIREMENT OF DEBT | -6.7 | 6.9 | 2.9 | | 1.8 | 5.2 | -2.6 | 7.1 |
| OTHER INCOME, net | -16.1 | -8.1 | -4.5 | -7.1 | -8.0 | -6.6 | -0.9 | 0.2 |
| Income before provision for income taxes and noncontrolling interests in income of subsidiaries | 56.7 | 52.1 | -41.0 | 12.9 | 3.4 | -10.7 | 10.3 | -51.1 |
| PROVISION FOR INCOME TAXES | 16.7 | 13.0 | -34.5 | 10.9 | -135.2 | -123.2 | 9.6 | 15.1 |
| NET INCOME | 40.0 | 39.1 | -6.6 | 2.1 | 138.6 | 112.5 | 0.7 | -66.1 |
| NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS | 2.6 | 2.3 | 1.5 | 1.1 | 1.2 | 0.6 | 1.1 | 7.9 |
| NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS | 37.3 | 36.8 | -8.1 | 0.9 | 137.4 | 111.9 | -0.4 | -74.0 |
| |
| BASIC NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS | | | | | | | | |
| Net income attributable to common stockholders | $0.76 | $0.73 | ($0.18) | | | | ($0.01) | |
| |
| DILUTED NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS | | | | | | | | |
| Net income attributable to common stockholders | $0.72 | $0.68 | ($0.18) | | | $2.25 | ($0.01) | |
| |
| WEIGHTED AVERAGE SHARES OUTSTANDING: | | | | | | | | |
| Basic | 48.9 | 50.2 | 45.0 | 44.7 | 45.6 | 47.2 | 47.9 | 48.0 |
| Diluted | 52.2 | 54.1 | 45.0 | 47.9 | 48.0 | 49.6 | 47.9 | 48.0 |