Derivative Financial Instruments (Tables)

9 Months Ended

Jun. 30, 2022

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative instruments in condensed consolidated balance sheets

	September 30, 2021
Other current liabilities	$	4.7
Other liabilities	1.1
Total liabilities	$	5.8

Derivative Instruments, Loss (Gain)

	Statement of Operations Location	Three Months Ended June 30,				Nine Months Ended June 30,
Hedging Activity		2022		2021		2022		2021
Mark-to-market adjustments	Interest expense, net	$	—	$	0.1	$	(2.3)	$	—
Net loss reclassified from accumulated OCI	Interest expense, net	—		0.6		1.0		1.7
Net loss reclassified from accumulated OCI	Loss on extinguishment and refinancing of debt, net	—		—		6.1		—
Tax benefit reclassified from accumulated OCI	Income tax expense	—		(0.1)		(0.4)		(0.1)
Total net hedging losses, net of tax		$	—	$	0.6	$	4.4	$	1.6
Cash settlements paid, net		$	—	$	(1.2)	$	(2.0)	$	(3.6)