Preferred and Common Stockholder's Equity (Tables)

9 Months Ended

Mar. 31, 2020

Equity [Abstract]

Summary of Common Shares Issued and Outstanding

Common shares issued and outstanding

	Nine months ended		Year ended
	March 31,		June 30,
	2020		2019
Beginning common stock issued and outstanding		73.5		70.6
Common stock issued upon exercise of options and employee    stock plans		1.0		4.5
Repurchase and retirement of common stock		—		(1.6	)
Common stock issued and outstanding at end of period		74.5		73.5

Reconciliation of Denominators of Basic and Diluted Earnings Per Share Computations

The following is a reconciliation of the denominators of the basic and diluted earnings per share (“EPS”) computations:

	Three months ended				Nine months ended
	March 31,				March 31,
	2020		2019		2020		2019
Denominator:
Weighted-average shares outstanding     used to compute basic EPS		74.5		73.3		74.2		73.5
Effect of dilutive shares		—		1.6		—		2.9
Weighted-average shares outstanding and     dilutive securities used to compute     diluted EPS		74.5		74.9		74.2		76.4

Schedule of Anti-Dilutive Options and Restricted Stock Units Excluded from EPS Computation

These potential dilutive common shares, which may be dilutive to future diluted earnings per share, are as follows:

	Three months ended				Nine months ended
	March 31,				March 31,
	2020		2019		2020		2019
Anti-dilutive options and RSU's excluded from EPS computation		0.4		1.0		0.9		0.7

Schedule of Stock Repurchases

The shares retired, aggregate common stock and additional paid-in capital reductions, and related charges to accumulated deficit for the repurchases for three and nine months ended March 31, 2020 and 2019 were as follows:

	Three months ended				Nine months ended
	March 31,				March 31,
	2020		2019		2020		2019
Shares purchased and retired		—		—		—		1.6
Common stock and additional paid-in-capital reductions	$	—	$	—	$	—	$	16.9
Charges to retained earnings	$	—	$	—	$	—	$	33.1