Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income (loss)	$ 46.3	$ (41.6)	$ 44.4
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	84.7	80.5	80.1
Amortization of intangible assets	52.3	55.8	56.3
Amortization of financing costs and original issue discount	3.7	3.7	3.7
Deferred taxes	28.9	(27.1)	(2.3)
Equity-based compensation	19.7	23.6	15.7
Realized loss on hedges	(4.6)	19.3	7.0
Goodwill impairment	0.0	15.5
Other non-cash activities, net	(4.1)	6.1	(0.3)
Change in operating assets and liabilities:
Accounts receivable	(41.9)	18.6	(12.8)
Unbilled and deferred revenue	(25.8)	21.2	(34.8)
Inventories	0.0	0.7	(2.4)
Other operating assets	(28.4)	(5.2)	17.1
Accounts payable and other operating liabilities	8.4	74.0	(2.0)
Net cash provided by operating activities	148.4	245.1	169.7
Cash flows from investing activities:
Purchase of property and equipment	(61.2)	(52.7)	(89.9)
Proceeds from sale of property and equipment	9.5	4.8	6.8
Business acquisitions, net of cash acquired	(110.4)	(90.3)	(64.0)
Proceeds from divestitures	2.7	28.5
Other investing activities, net	(0.7)	0.9	(1.6)
Net cash used in investing activities	(158.7)	(108.8)	(145.5)
Cash flows from financing activities:
Repayments of finance lease obligations	(20.5)	(9.9)	(5.8)
Repayments of term loan	(10.4)	(10.4)	(13.0)
Repayments of receivables financing agreement	(24.6)	(80.0)	(120.0)
Repayments of revolving credit facility	0.0	(70.0)	(10.0)
Proceeds from receivables financing agreement	34.5	80.0	120.0
Proceeds from revolving credit facility	0.0	70.0	10.0
Proceeds from issuance of common stock, net of share issuance costs	1.8	1.8
Repurchase of common stock and distributions	(1.9)	(1.5)	(1.2)
Other financing activities, net	(2.0)	1.7	(0.3)
Net cash (used in) provided by financing activities	(23.1)	(18.3)	(20.3)
Net change in cash and cash equivalents	(33.4)	118.0	3.9
Cash and cash equivalents, beginning of period	157.1	39.1	35.2
Cash and cash equivalents, end of period	123.7	157.1	39.1
Supplemental Cash Flow Information:
Cash paid for income taxes, net	19.5	8.6	1.9
Cash paid for interest	$ 40.1	$ 61.4	$ 71.7