| In millions, except per share items | Mar-31-16 | Dec-31-15 | Sep-30-15 | Jun-30-15 | Mar-31-15 | Dec-31-14 | Sep-30-14 | Jun-30-14 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Cash flows from operating activities: | | | | | | | | |
| Net income | 15.4 | 14.8 | 21.6 | 14.7 | 14.8 | 4.7 | 7.6 | 13.4 |
| Adjustments to reconcile net income to net cash from operating activities: | | | | | | | | |
| Depreciation, accretion, and amortization of intangible assets | 31.9 | 30.6 | 32.2 | 31.4 | 29.6 | 29.9 | 26.9 | 28.1 |
| Amortization of deferred financing costs and note discount | 2.8 | 2.9 | 2.9 | 2.8 | 2.8 | 2.7 | 4.9 | 2.8 |
| Stock-based compensation expense | 3.2 | 5.2 | 5.1 | 4.9 | 4.2 | 5.0 | 4.6 | 3.7 |
| Deferred income taxes | 3.1 | 8.8 | 0.1 | 5.0 | -2.9 | 4.8 | 0.9 | -1.8 |
| Loss (gain) on disposal of assets | 0.4 | -1.6 | -12.1 | 0.2 | -0.5 | 1.6 | 1.1 | 0.3 |
| Other reserves and non-cash items | -0.8 | 0.5 | 0.5 | 1.0 | 1.2 | -4.7 | 8.2 | 1.6 |
| Changes in assets and liabilities: | | | | | | | | |
| (Increase) decrease in accounts and notes receivable, net | -2.0 | 19.0 | 1.4 | -12.2 | 9.1 | -4.6 | -2.3 | 0.3 |
| (Increase) decrease in prepaid, deferred costs, and other current assets | -2.1 | -15.2 | 3.3 | -10.3 | 2.7 | 0.5 | 0.1 | -9.2 |
| Decrease (increase) in inventory | 1.2 | 0.2 | -1.1 | -1.3 | -2.5 | 0.4 | -0.3 | -1.6 |
| Decrease (increase) in other assets | 1.8 | 15.2 | -9.1 | 3.9 | -1.7 | -4.9 | -2.7 | 3.0 |
| Decrease in accounts payable | -4.6 | 0.4 | -8.5 | 23.3 | -23.2 | 6.6 | 4.8 | 2.7 |
| Decrease in accrued liabilities | -3.8 | 21.1 | 22.9 | -9.9 | -2.2 | 27.5 | -4.7 | -0.4 |
| Decrease in other liabilities | -1.8 | 7.5 | 1.3 | 2.0 | -0.4 | 7.0 | -2.8 | -0.5 |
| Net cash provided by operating activities | 44.7 | 109.4 | 60.5 | 55.7 | 30.9 | 85.5 | 46.2 | 42.4 |
| |
| Cash flows from investing activities: | | | | | | | | |
| Additions to property and equipment | -16.5 | -38.3 | -43.6 | -24.7 | -31.7 | -44.8 | -21.4 | -25.0 |
| Acquisitions, net of cash acquired | -2.7 | | -79.9 | -8.4 | -15.5 | -218.2 | 0.0 | |
| Proceeds from sale of assets and businesses | 7.4 | | 36.7 | -7.4 | 7.4 | | | |
| Net cash used in investing activities | -11.8 | -38.5 | -98.3 | -33.0 | -39.8 | -263.0 | -23.3 | -25.0 |
| |
| Cash flows from financing activities: | | | | | | | | |
| Proceeds from borrowings under revolving credit facility | 56.5 | 112.4 | 159.8 | 67.1 | 113.4 | | | |
| Repayments of borrowings under revolving credit facility | -86.4 | -175.4 | -124.7 | -85.4 | -114.1 | -57.1 | 18.6 | -23.0 |
| Proceeds from exercises of stock options | 0.1 | 0.5 | 0.0 | 0.1 | 0.4 | 0.5 | 0.2 | 0.0 |
| Additional tax (expense) benefit related to stock-based compensation | -0.4 | | | | 0.4 | | | |
| Repurchase of capital stock | -3.9 | -0.1 | -0.6 | -0.1 | -3.9 | -0.5 | -0.5 | -0.1 |
| Net cash used in financing activities | -34.0 | -61.8 | 35.0 | -17.9 | -3.8 | 73.6 | 57.4 | -16.5 |
| |
| Effect of exchange rate changes on cash | -0.1 | -1.3 | -3.5 | 2.8 | -2.0 | -5.1 | -0.7 | -0.1 |
| Net decrease in cash and cash equivalents | -1.2 | 7.8 | -6.3 | 7.6 | -14.7 | -109.0 | 79.5 | 0.7 |
| |
| Cash and cash equivalents as of beginning of period | | | | | | | | |
| Cash and cash equivalents as of end of period | | | | | | | | |
| Supplemental disclosure of cash flow information: | | | | | | | | |
| Cash paid for interest | 6.9 | 2.1 | 7.7 | 2.3 | 7.3 | 1.9 | 7.5 | 2.8 |
| Cash paid for income taxes | 1.1 | 8.9 | 1.2 | 16.3 | 2.0 | 2.7 | 5.2 | 14.1 |