Earnings Per Share (Tables)

9 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per share

	Three Months Ended June 30, 2020		Period Ended June 30, 2020
Net earnings available to Class A Common Stockholders for basic earnings per share	$	3.3	$	13.5
Dilutive impact of net earnings attributable to NCI	—		—
Net earnings available to Class A Common Stockholders for diluted earnings per share	$	3.3	$	13.5
Weighted-average shares for basic earnings per share (in millions)	39.4		39.4
Total dilutive restricted stock units (in millions)	0.1		0.1
Weighted-average shares for diluted earnings per share (in millions)	39.5		39.5
Basic earnings per share of Class A Common Stock	$	0.08	$	0.34
Diluted earnings per share of Class A Common Stock	$	0.08	$	0.34