Derivative Financial Instruments (Tables)

6 Months Ended

Mar. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative instruments in condensed consolidated balance sheets

	March 31, 2021		September 30, 2020
Other current liabilities	$	4.7	$	4.6
Other liabilities	3.2		5.8
Total liabilities	$	7.9	$	10.4

Derivative Instruments, Loss (Gain)

	Three Months Ended March 31,				Six Months Ended March 31,
	2021		2020		2021		2020
Mark-to-market adjustments	$	(0.1)	$	(0.2)	$	(0.1)	$	(0.2)
Net loss amortized from accumulated OCI	0.6		—		1.1		—
Total net hedging losses (gains)	$	0.5	$	(0.2)	$	1.0	$	(0.2)
Cash settlements (paid) received, net	$	(1.2)	$	0.2	$	(2.4)	$	0.2