| In millions, except per share items | Sep-30-19 | Jun-30-19 | Mar-31-19 | Dec-31-18 | Sep-30-18 | Jun-30-18 | Mar-31-18 | Dec-31-17 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Cash flows from operating activities: | | | | | | | | |
| Net income | 44.5 | 35.2 | 39.6 | 35.1 | 128.4 | 133.6 | 129.8 | 114.3 |
| Adjustments to reconcile net income to net cash from (used in) operating activities | | | | | | | | |
| Amortization of intangible assets | 75.1 | 75.2 | 75.3 | 74.9 | 74.9 | 74.4 | 73.9 | 74.0 |
| Depreciation of property and equipment in operating expenses | 11.6 | 11.1 | 10.8 | 10.1 | 9.7 | 9.3 | 8.8 | 8.7 |
| Provision for sales returns and credit losses | 1.3 | 2.4 | 0.8 | 0.8 | 1.3 | 1.0 | 1.9 | 1.5 |
| Amortization of debt issuance costs | 3.4 | 3.5 | 3.6 | 3.7 | 4.1 | 4.5 | 5.0 | 5.7 |
| Loss on extinguishment of debt | 1.8 | 2.1 | 1.5 | 14.4 | 14.6 | | 15.6 | 29.1 |
| Noncash lease income | -5.3 | -6.1 | -5.0 | -2.7 | -2.6 | -1.4 | | -4.2 |
| Share-based compensation expense | 9.0 | 9.5 | 8.3 | 9.1 | 8.3 | 7.0 | 6.9 | 11.8 |
| Deferred income tax benefit | 1.5 | 0.0 | -6.3 | -7.5 | -91.8 | -93.4 | -91.2 | -97.2 |
| Other | 0.2 | | 0.0 | | | 0.1 | 0.3 | |
| Change in assets and liabilities, net of acquisitions and dispositions: | | | | | | | | |
| Unbilled and accounts receivable | -83.0 | -102.8 | -61.4 | -64.4 | -52.5 | -19.6 | -124.5 | -53.9 |
| Inventory | 8.9 | 2.5 | -0.4 | 7.4 | -9.0 | 0.3 | -2.6 | 10.1 |
| Prepaid expenses and other assets | -92.2 | -86.7 | -64.0 | -49.4 | -24.4 | -25.1 | -16.2 | -2.1 |
| Accounts payable – trade | 5.0 | 40.0 | 57.2 | 34.6 | -1.3 | 96.4 | 78.3 | -26.5 |
| Accrued expenses and other liabilities | 86.9 | 117.4 | 91.0 | 72.1 | 45.8 | -15.7 | 8.4 | 15.2 |
| Net cash provided by (used in) operating activities | 73.0 | 108.0 | 155.9 | 143.4 | 111.1 | 192.0 | 97.4 | 92.3 |
| |
| Cash flows from investing activities: | | | | | | | | |
| Additions of equipment under sales-type and direct financing leases | -139.4 | -139.8 | -150.5 | -141.5 | -121.9 | -108.3 | -104.4 | -85.9 |
| Proceeds from collection of financing receivables | 6.9 | 7.2 | 7.9 | 4.6 | 4.2 | 4.1 | 4.0 | 4.3 |
| Additions to equipment under operating leases | -1.5 | -1.3 | -0.4 | | | -1.6 | -1.9 | -2.4 |
| Proceeds from disposition of equipment under operating leases | 1.1 | 0.7 | 0.6 | 0.1 | | | | 1.7 |
| Purchases of property and equipment | -13.5 | -15.1 | -15.2 | -15.5 | -13.5 | -14.4 | -13.0 | -11.9 |
| Net cash used in investing activities | -146.4 | -148.3 | -190.9 | -186.1 | -165.5 | -162.1 | -123.8 | -103.5 |
| |
| Cash flows from financing activities: | | | | | | | | |
| Proceeds from issuance of common stock under share-based compensation plans | 8.2 | 5.1 | 5.9 | 5.0 | 6.1 | 8.0 | 6.4 | 5.5 |
| Common stock repurchased | | | | | -158.6 | | | |
| Dividends paid | -13.2 | -9.9 | 6.6 | -3.3 | | | | |
| Proceeds from the discounting of financing receivables | 149.6 | 161.5 | 174.5 | 158.7 | 137.9 | 114.6 | 103.6 | 89.5 |
| Retirements of discounted financing receivables | -19.1 | -23.6 | -25.9 | -24.9 | -14.7 | -10.0 | -6.3 | -3.2 |
| Deferred financing costs | | -0.7 | -0.8 | | -1.5 | | -1.2 | -0.6 |
| Borrowings of term loans, net of original issue discount | | | | | 296.3 | | 138.2 | |
| Repayments of term loans | -85.0 | -100.0 | -80.0 | -80.0 | -80.0 | -80.0 | -100.2 | -127.0 |
| Net change in accounts payable — floor plan | 31.1 | 2.1 | -27.5 | -3.7 | 9.9 | -54.3 | 25.2 | 12.7 |
| Net cash provided by financing activities | 71.2 | 34.0 | 39.1 | 52.9 | 59.7 | -20.4 | 23.5 | -13.6 |
| Net decrease in cash and cash equivalents | -2.2 | -6.3 | 4.1 | 10.2 | 5.3 | 9.5 | -2.9 | -24.8 |
| |
| Beginning of the period | | | | | | | | |
| End of the period | | | | | | | | |
| Supplemental disclosures of cash flow information | | | | | | | | |
| Cash paid during the period for: | | | | | | | | |
| Interest | 46.5 | 44.5 | 41.1 | 42.5 | 40.3 | 44.8 | 43.0 | 60.9 |
| Income Taxes Paid, Net | 15.2 | 17.3 | 6.3 | 11.7 | 18.0 | 20.3 | 30.6 | 24.5 |
| Reduction Of Discounted Lease Assets And Liabilities | 116.5 | 114.9 | 109.6 | 104.9 | 104.3 | 102.7 | 104.5 | 101.1 |