Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operations
Net income (loss)	$ 26.9	$ (9.4)
Adjustments to reconcile to cash flows from operations:
Depreciation and amortization	39.1	34.6
Debt issuance costs amortization, debt issuance costs write-offs and original issue discount amortization	2.2	2.0
Provision for bad debt	0.9	(0.1)
Deferred income taxes	(6.1)	(5.6)
Equity-based compensation expense	3.5	2.7
Change in fair value of contingent consideration obligations	(6.0)	20.6
(Gain) loss from sales of property and equipment	(0.4)	0.1
Gain related to reimbursements of certain capital expenditures incurred	0.0	(2.7)
Changes in assets and liabilities:
Accounts and notes receivable	(28.6)	(70.4)
Inventories	(55.3)	(23.7)
Other current assets	(1.5)	1.9
Accounts payable	2.3	33.8
Accrued expenses and other liabilities	(6.6)	(10.6)
Changes in other operating assets and liabilities, net	4.6	0.9
Net cash used in operating activities	(25.0)	(25.9)
Cash flows from investing activities
Additions to property and equipment	(8.0)	(14.5)
Proceeds from the disposal of property and equipment	2.6	0.1
Proceeds from reimbursement of certain capital expenditures incurred	0.0	2.9
Cash paid for asset acquisitions	(7.7)	(5.1)
Net cash used in investing activities	(13.1)	(16.6)
Cash flows from financing activities
Cash paid to TPG related to TRA	(4.2)	0.0
Proceeds from short-term debt	32.7	19.5
Repayments of short-term debt	(36.2)	(19.1)
Proceeds from issuance of long-term debt	374.8	385.5
Repayments of long-term debt and capital lease obligations	(339.9)	(293.6)
Payment of debt issuance costs	(0.8)	(1.3)
Net cash provided by financing activities	26.4	91.0
Effect of exchange rate changes on cash and cash equivalents	0.2	(0.7)
Increase (decrease) in cash and cash equivalents	(11.5)	47.8
Cash and cash equivalents at the beginning of the period	53.9	47.5
Cash and cash equivalents at the end of the period	42.4	95.3
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	23.6	24.7
Cash paid during the period for taxes (net of refunds)	5.3	2.6
Supplemental disclosure of non-cash investing and non-cash financing activities:
Non-cash capital expenditures	1.0	15.8
Non-cash intangible assets acquired	3.0	3.4
Non-cash capital lease obligations, net	$ 0.2	$ 13.4