Stock-Based Compensation (Tables)

6 Months Ended

Feb. 28, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Recognized stock-based compensation expense within selling, general and administrative expense

The Company recognized stock-based compensation expense within selling, general and administrative expense as follows (in thousands):

	Three months ended				Six months ended
	February 28, 2019		February 28, 2018		February 28, 2019		February 28, 2018
Restricted stock units and stock appreciation rights	$	13,604	$	12,952	$	28,655	$	56,459
Employee stock purchase plan	2,093		2,087		4,291		3,787
Other(1)	—		—		—		7,538
Total	$	15,697	$	15,039	$	32,946	$	67,784

⁽¹⁾  Represents a one-time cash-settled stock award that vested on November 30, 2017.

Share-based compensation information

The following represents the stock-based compensation information for the period indicated (in thousands):

	Six months ended
	February 28, 2019
Unrecognized stock-based compensation expense—restricted stock units	$	66,046
Remaining weighted-average period for restricted stock units expense	1.5 years

Schedule of common stock shares outstanding

The following represents the common stock outstanding for the periods indicated:

	Three months ended				Six months ended
	February 28, 2019		February 28, 2018		February 28, 2019		February 28, 2018
Common stock outstanding:
Beginning balances	157,986,896		176,305,660		164,588,172		177,727,653
Shares issued upon exercise of stock options	11,348		154		11,348		29,688
Shares issued under employee stock purchase plan	691,971		575,516		692,325		575,516
Vesting of restricted stock	219,764		220,022		1,905,927		2,694,147
Purchases of treasury stock under employee stock plans	(57,389	)	(59,708	)	(464,836	)	(784,031	)
Treasury shares purchased	(5,974,261	)	(4,978,414	)	(13,854,607	)	(8,179,743	)
Ending balances	152,878,329		172,063,230		152,878,329		172,063,230