| In millions, except per share items | Sep-30-22 | Sep-30-21 | Sep-30-20 | Sep-30-18 | Sep-30-17 | Sep-30-16 | Sep-25-15 | Sep-26-14 |
| | 10-K | 10-K | 10-K | 8-K | 10-K | 10-K | 10-K | 10-K |
| Operating activities | | | | | | | | |
| Net income | 913.4 | 587.9 | 152.3 | | 84.6 | 58.8 | -5.0 | -73.9 |
| |
| Adjustments to reconcile net income to net cash provided by operating activities | | | | | | | | |
| Depreciation and amortization | 84.4 | 78.6 | 74.5 | | 54.7 | 55.0 | 59.5 | 58.7 |
| Amortization of debt issuance costs and original issue discount | 2.2 | 2.5 | 1.9 | | 1.4 | 3.6 | 3.6 | 4.7 |
| Deferred income taxes | 3.1 | -43.3 | 4.5 | | 0.9 | 2.6 | -3.7 | -36.5 |
| Loss on extinguishment of debt | | 4.2 | 0.3 | | 9.8 | -1.7 | | 43.7 |
| Provision for losses on accounts receivable and inventory | 10.2 | 0.6 | 5.0 | | | | | |
| Stock-based compensation expense | 17.2 | 17.0 | 13.1 | | 12.8 | 21.1 | 13.5 | 8.4 |
| Amortization of right-of-use assets | 13.9 | 14.5 | 14.8 | | | | | |
| Other adjustments to net income | 4.9 | -0.2 | 2.2 | | 0.9 | -0.2 | | |
| |
| Changes in operating assets and liabilities, net of effects from acquisitions | | | | | | | | |
| Accounts receivable | 17.7 | -219.7 | 16.9 | | -13.4 | 24.5 | 7.0 | -12.1 |
| Inventories | -161.0 | -81.5 | 24.6 | | -10.3 | -2.4 | 67.5 | 7.7 |
| Prepaid expenses and other current assets | -21.7 | -6.5 | -11.2 | | -3.1 | -3.0 | -0.6 | 16.6 |
| Accounts payable | -29.0 | 98.4 | -5.8 | | 8.7 | 4.1 | -43.7 | 26.8 |
| Income taxes | -92.8 | 80.3 | -6.3 | | -9.1 | 1.0 | -3.8 | 0.7 |
| Accrued and other liabilities | 27.2 | 63.5 | -32.9 | | -11.2 | -9.6 | 16.3 | -1.0 |
| Other, net | -2.9 | -23.4 | -5.0 | | -1.3 | 0.0 | 0.6 | -3.1 |
| Net cash provided by operating activities | 786.8 | 572.9 | 248.8 | | 121.7 | 156.6 | 141.1 | 86.3 |
| |
| Investing activities | | | | | | | | |
| Capital expenditures | -135.8 | -64.5 | -33.8 | | -25.1 | -16.8 | -26.8 | -24.4 |
| Insurance proceeds for properties, plant and equipment | | 9.6 | 2.3 | | | | | |
| Proceeds from sale of properties, plant and equipment | 0.8 | 0.1 | 3.9 | | 0.1 | 0.1 | 1.5 | 7.4 |
| Acquisitions of businesses, net of cash acquired | -307.8 | -43.2 | | | -183.9 | | -30.5 | -39.8 |
| Net cash used for investing activities | -442.8 | -98.0 | -27.5 | | -205.8 | -12.9 | -46.6 | -48.9 |
| |
| Financing activities | | | | | | | | |
| Repayments of short-term debt | | -4.0 | | | -4.2 | -1.6 | -1.7 | -5.8 |
| Issuance of long-term debt | | 798.0 | | | | | | |
| Repayments of long-term debt | | -835.1 | -40.0 | | | | | |
| Issuance of common stock, net of taxes withheld | -24.0 | 2.7 | -3.0 | | 12.2 | 0.1 | 0.0 | 0.7 |
| Repurchase of common stock | -500.2 | -135.1 | | | -13.9 | | -0.9 | -252.8 |
| Other, net | | | 0.0 | | -0.1 | -0.2 | 0.0 | 0.3 |
| Net cash used for financing activities | -524.2 | -184.5 | -61.2 | | -67.8 | -23.9 | -44.1 | -57.6 |
| Effects of foreign exchange rate changes on cash and cash equivalents | -7.4 | 1.3 | 1.0 | | | | | |
| Increase (decrease) in cash and cash equivalents | -187.5 | 291.8 | 161.1 | | | | | |
| |
| Supplementary Cash Flow information | | | | | | | | |
| Interest paid | 30.5 | 23.7 | 38.8 | | 26.1 | 49.9 | 41.5 | 42.8 |
| Income taxes paid, net of refunds | 379.8 | 155.1 | 51.0 | | 49.8 | 30.9 | 4.8 | 2.2 |
| Capital expenditures, not yet paid | 8.7 | 1.1 | 1.3 | | 1.3 | 0.5 | 0.3 | 0.2 |
| Acquisitions of businesses, not yet paid | 12.6 | | | | | | | |
| Operating cash flows from cash paid on operating lease liabilities | 12.5 | 13.0 | 12.9 | | | | | |
| Operating lease right-of-use assets obtained in exchange for lease liabilities | 38.8 | 13.5 | 15.3 | | | | | |