Income Taxes (Tables)

6 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Summary of Income Tax Benefit or Expense and Effective Income Tax Rate

The following table summarizes the Company’s income tax benefit or expense and effective income tax rate for the three and six months ended March 31, 2021 and 2020.

	Three Months Ended March 31,						Six Months Ended March 31,
	2021			2020			2021			2020
Income (loss) before income taxes	$	8.6		$	(27.2	)	$	(7.1	)	$	(44.7	)
Income tax expense (benefit)		2.3			(6.7	)		(1.4	)		(11.6	)
Effective income tax rate		26.7	%		24.6	%		19.7	%		26.0	%