Changes in Stockholders' Equity (Tables)

3 Months Ended

Nov. 30, 2019

Equity [Abstract]

Schedule of Changes in Stockholders' Equity

The following tables summarize changes in the components of stockholders' equity for the periods presented (in millions):

	Common Stock Outstanding
	Shares	Amount		Paid-in Capital		Retained Earnings			Accumulated Other Comprehensive Loss			Treasury Stock, at cost			Total
Balance, August 31, 2019	39.5	$	0.5	$	930.0	$	2,295.8		$	(151.4	)	$	(1,156.0	)	$	1,918.9
Net income	—	—		—		57.0			—			—			57.0
Other comprehensive income	—	—		—		—			3.8			—			3.8
Share-based payment amortization, issuances, and cancellations	—	—		12.6		—			—			—			12.6
Employee stock purchase plan issuances	—	—		0.2		—			—			—			0.2
Cash dividends of $0.13 per share paid on common stock	—	—		—		(5.2		)	—			—			(5.2		)
Balance, November 30, 2019	39.5	$	0.5	$	942.8	$	2,347.6		$	(147.6	)	$	(1,156.0	)	$	1,987.3

	Common Stock Outstanding
	Shares		Amount		Paid-in Capital		Retained Earnings			Accumulated Other Comprehensive Loss			Treasury Stock, at cost			Total
Balance, August 31, 2018	40.0		$	0.5	$	906.3	$	1,999.2		$	(114.8	)	$	(1,074.4	)	$	1,716.8
Net income	—		—		—		79.6			—			—			79.6
Other comprehensive loss	—		—		—		—			(6.2		)	—			(6.2		)
ASC 606 adjustments	—		—		—		(13.0		)	—			—			(13.0		)
Share-based payment amortization, issuances, and cancellations	0.1		—		3.8		—			—			—			3.8
Employee stock purchase plan issuances	—		—		0.1		—			—			—			0.1
Cash dividends of $0.13 per share paid on common stock	—		—		—		(5.2		)	—			—			(5.2		)
Repurchases of common stock	(0.2	)	—		—		—			—			(25.0		)	(25.0		)
Balance, November 30, 2018	39.9		$	0.5	$	910.2	$	2,060.6		$	(121.0	)	$	(1,099.4	)	$	1,750.9