Stock-Based Compensation - Summary of Incentive Equity Awards (Detail) (USD $)	3 Months Ended
	Sep. 30, 2014
Time-Based Restricted Stock Units [Member]
Number of Options
Number of Options, Beginning balance (in shares)	1,866,408
Number of Options, Granted (in shares)	28,220
Number of Options, Vesting of restricted stock units (in shares)	(980)	[1]
Number of Options, Expired/forfeited (in shares)	(24,222)
Number of Options, Ending balance (in shares)	1,869,426	[2]
Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Beginning balance (in dollars per share)	$ 25.69
Weighted-Average Grant Date Fair Value, Granted (in dollars per share)	$ 38.47
Weighted-Average Grant Date Fair Value, Vesting of restricted stock units (in dollars per share)	$ 25.15	[1]
Weighted-Average Grant Date Fair Value, Expired/forfeited (in dollars per share)	$ 27.04
Weighted-Average Grant Date Fair Value, Ending balance (in dollars per share)	$ 25.87	[2]
Performance-Based Restricted Stock Units [Member]
Number of Options
Number of Options, Beginning balance (in shares)	662,282
Number of Options, Granted (in shares)	38,294
Number of Options, Vesting of restricted stock units (in shares)	(5,210)	[1]
Number of Options, Expired/forfeited (in shares)	(839)
Number of Options, Ending balance (in shares)	694,527	[2]
Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Beginning balance (in dollars per share)	$ 26.30
Weighted-Average Grant Date Fair Value, Granted (in dollars per share)	$ 30.23
Weighted-Average Grant Date Fair Value, Vesting of restricted stock units (in dollars per share)	$ 23.30	[1]
Weighted-Average Grant Date Fair Value, Expired/forfeited (in dollars per share)	$ 27.25
Weighted-Average Grant Date Fair Value, Ending balance (in dollars per share)	$ 26.53	[2]
Stock Options [Member]
Number of Options
Number of Options, Beginning balance (in shares)	9,847,291	[3]
Number of Options, Granted (in shares)	26,260	[3]
Number of Options, Exercise of stock options (in shares)	(811,073)	[3],[4]
Number of Options, Expired/forfeited (in shares)	(5,698)	[3]
Number of Options, Ending balance (in shares)	9,056,780	[2],[3]
Weighted-Average Exercise Price
Weighted-Average Exercise Price, Beginning balance (in dollars per share)	$ 23.73
Weighted-Average Exercise Price, Granted (in dollars per share)	$ 40.67
Weighted-Average Exercise Price, Exercise of stock options (in dollars per share)	$ 18.93	[4]
Weighted-Average Exercise Price, Expired/forfeited (in dollars per share)	$ 17.67
Weighted-Average Exercise Price, Ending balance (in dollars per share)	$ 24.21	[2]

[1] Time-based and performance-based restricted stock units that vested during the period of July 1, 2014 through September 30, 2014 had a fair value of $0.2 million

[2] As of September 30, 2014, the Company's outstanding "in the money" stock options using the September 30, 2014 closing stock price of $41.63 (approximately 5.9 million shares) had an aggregate intrinsic value of $121.1 million. As of September 30, 2014, time-based restricted stock units and performance-based restricted stock units expected to vest using the September 30, 2014 share price of $41.63 (approximately 1.7 million and 0.7 million shares, respectively) had an aggregate intrinsic value of $72.2 million and $28.4 million, respectively.

[3] Stock options outstanding as of September 30, 2014 have a weighted-average remaining contractual life of 5.7 years and 5.9 million stock options are exercisable.

[4] Stock options exercised during the period of July 1, 2014 through September 30, 2014 had an intrinsic value of $18.4 million.