| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Revenue: | | | | | | |
| Total revenue | 719.4 | 718.6 | 716.8 | 669.1 | 833.1 | 728.0 |
| Total revenue growth | 0.1% | 0.3% | 7.1% | -19.7% | 14.4% | |
| Cost of revenue: | | | | | | |
| Cost of recurring revenue | 67.8 | 67.0 | 54.3 | 46.3 | 70.7 | 60.7 |
| Amortization of acquired technologies | 52.3 | 55.3 | 51.1 | 46.6 | 66.8 | 67.1 |
| Total cost of revenue | 96.0 | 227.0 | 211.4 | 198.1 | 246.7 | 231.7 |
| Gross profit | 623.4 | 491.6 | 505.3 | 471.0 | 586.4 | 496.3 |
| Gross margin | 86.7% | 68.4% | 70.5% | 70.4% | 70.4% | 68.2% |
| |
| Operating expenses: | | | | | | |
| Sales and marketing | 257.7 | 236.4 | 217.9 | 194.3 | 227.5 | 205.6 |
| Research and development | 92.3 | 101.8 | 85.8 | 75.9 | 96.3 | 86.6 |
| General and administrative | 149.5 | 131.0 | 98.3 | 74.4 | 80.6 | 67.3 |
| Amortization of acquired intangibles | 52.3 | 55.3 | 51.1 | 46.6 | 66.8 | 67.1 |
| Goodwill impairment | 891.1 | | | | | |
| Total operating expenses | 1,443.0 | 524.5 | 453.1 | 391.1 | 471.2 | 426.6 |
| Operating income (loss) | -819.6 | -32.9 | 52.3 | 79.9 | 115.2 | 69.7 |
| Operating margin | -113.9% | -4.6% | 7.3% | 11.9% | 13.8% | 9.6% |
| |
| Other income (expense): | | | | | | |
| Interest expense, net | -83.4 | -64.5 | -75.9 | -108.1 | -142.0 | -169.8 |
| Other income (expense), net | -5.1 | 0.5 | -0.5 | 0.0 | -94.9 | 38.7 |
| Total other expense | -88.4 | -64.1 | -76.4 | -108.1 | -236.9 | -131.1 |
| Income (loss) before income taxes | -908.0 | -96.9 | -24.1 | -28.2 | -121.7 | -61.5 |
| Income tax expense | 21.4 | -32.5 | -140.2 | -3.1 | -19.6 | 22.4 |
| Net income (loss) | -929.4 | -51.4 | 158.5 | 18.6 | -102.1 | -83.9 |
| |
| Net income (loss) available to common stockholders | ($5.78) | ($0.33) | $1.01 | $0.12 | $2.60 | ($3.50) |
| Net income (loss) available to common stockholders | | | | | 364.6 | -351.9 |
| |
| Net income (loss) available to common stockholders per share: | | | | | | |
| Basic income (loss) per share (in dollars per share) | ($5.78) | ($0.33) | $1.01 | $0.12 | $2.60 | ($3.50) |
| Diluted income (loss) per share (in dollars per share) | ($5.78) | ($0.33) | $1.00 | $0.12 | $2.56 | ($3.50) |
| |
| Weighted-average shares used to compute net income (loss) available to common stockholders per share: | | | | | | |
| Shares used in computation of basic income (loss) per share (in shares) | 160.8 | 158.0 | 155.3 | 153.4 | 140.3 | 100.4 |
| Shares used in computation of diluted income (loss) per share (in shares) | 160.8 | 158.0 | 157.8 | 153.4 | 142.5 | 100.4 |