Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions		9 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net (loss)		$ (1.3)	$ 19.5
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation		71.5	63.6
Amortization of intangible assets		38.7	39.0
Amortization of financing costs and original issue discount		2.8	2.8
Loss on debt extinguishment	[1]	12.6	0.0
Deferred taxes		(12.7)	7.7
Equity-based compensation		14.0	15.4
Realized loss on hedges		0.2	5.3
Other non-cash activities, net		(2.5)	(2.2)
Change in operating assets and liabilities:
Accounts receivable		(28.8)	(29.9)
Unbilled and deferred revenue		16.0	(6.3)
Other operating assets		(7.6)	11.0
Accounts payable and other operating liabilities		(37.2)	7.5
Net cash provided by operating activities		65.7	133.4
Cash flows from investing activities:
Purchase of property and equipment		(88.1)	(44.7)
Proceeds from sale of property and equipment		5.4	7.5
Business acquisitions, net of cash acquired		(89.4)	(106.2)
Other investing activities, net		0.0	0.4
Net cash (used) by investing activities		(172.1)	(143.0)
Cash flows from financing activities:
Repayments of finance lease obligations		(18.1)	(12.3)
Repayments of term loan		(1,003.3)	(7.8)
Repayments of receivables financing agreement		(203.0)	(24.6)
Repayments of revolving credit facility		(165.0)	0.0
Proceeds from term loan, net of issuance costs		1,180.1	0.0
Proceeds from receivables financing agreement, net of issuance costs		223.7	24.0
Proceeds from revolving credit facility		165.0	0.0
Debt issuance costs		(4.6)	0.0
Proceeds from issuance of common stock, net of share issuance costs		1.3	1.4
Repurchase of common stock and distributions		(163.7)	(1.2)
Other financing activities, net		(3.4)	(2.0)
Net cash provided (used) by financing activities		9.0	(22.5)
Net change in cash and cash equivalents		(97.4)	(32.1)
Cash and cash equivalents, beginning of period		123.7	157.1
Cash and cash equivalents, end of period		26.3	125.0
Supplemental Cash Flow Information
Cash paid for income taxes, net		16.5	3.8
Cash paid for interest		$ 31.1	$ 31.1

[1] Represents losses on the extinguishment of debt related to Amendment No. 6 to the Credit Agreement and includes the write-off of deferred finance fees and original issue discount.