Stock Option and Cash-Based Stock Appreciation Rights Activity (Detail)	12 Months Ended
	Jun. 30, 2017 $ / shares shares
Number of Shares
Outstanding - July 1, 2016 | shares	4,251,926
Granted | shares	771,900
Exercised | shares	(858,445)
Forfeited and Expired | shares	(84,466)
Outstanding - June 30, 2017 | shares	4,080,915
Exercisable - June 30, 2017 | shares	2,242,901
Weighted Average Exercise Price
Outstanding - July 1, 2016 | $ / shares	$ 17.15
Granted | $ / shares	23.15
Exercised | $ / shares	17.58
Forfeited and Expired | $ / shares	19.62
Outstanding - June 30, 2017 | $ / shares	18.15
Exercisable - June 30, 2017 | $ / shares	$ 16.97
Cash-Based Stock Appreciation Rights
Number of Shares
Outstanding - July 1, 2016 | shares	178,234
Granted | shares	86,705
Exercised | shares	(44,856)
Forfeited and Expired | shares	(5,616)
Outstanding - June 30, 2017 | shares	214,467
Exercisable - June 30, 2017 | shares	34,334
Weighted Average Exercise Price
Outstanding - July 1, 2016 | $ / shares	$ 17.13
Granted | $ / shares	22.51
Exercised | $ / shares	17.42
Forfeited and Expired | $ / shares	19.39
Outstanding - June 30, 2017 | $ / shares	19.17
Exercisable - June 30, 2017 | $ / shares	$ 17.59