Stockholders' Equity - Additional Information (Detail) - USD ($)		1 Months Ended	3 Months Ended		11 Months Ended
	Jun. 22, 2016	Jun. 30, 2016	May 31, 2017	May 31, 2016	May 31, 2017
Shareholders Equity [Line Items]
Aggregate cost of common stock repurchased			$ 61,987,000	$ 66,478,000
June 2016 Share Repurchase Program
Shareholders Equity [Line Items]
Common stock authorized for stock repurchase program	$ 1,000,000,000
Stock repurchase program expiration date	Jun. 30, 2018
Stock repurchase program expiration description			The program commenced on July 1, 2016, and will expire on the earlier of (i) June 30, 2018 or (ii) a determination by the Board, Chief Executive Officer or Chief Financial Officer to discontinue the program.
Common stock, purchased during the period			714,906		5,615,555
Aggregate cost of common stock repurchased			$ 62,000,000
Stock available for repurchase			$ 573,800,000		$ 573,800,000
March 2015 Share Repurchase Program
Shareholders Equity [Line Items]
Common stock authorized for stock repurchase program		$ 500,000,000
Stock repurchase program termination date		Jun. 30, 2016