Share-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended														6 Months Ended													1 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Restricted Stock Units with Earning Per Share Performance Conditions [Member]	Dec. 31, 2012 Restricted Stock Units with Earning Per Share Performance Conditions [Member]	Dec. 31, 2013 Restricted Stock Units with Market Conditions [Member]	Dec. 31, 2012 Restricted Stock Units with Market Conditions [Member]	Dec. 31, 2013 Monte Carlo Simulation [Member]	Dec. 31, 2012 Monte Carlo Simulation [Member]	Dec. 31, 2012 Restricted Stock Units with Return on Invested Capital Performance Conditions [Member]	Dec. 31, 2013 Restricted Stock Units [Member]	Dec. 31, 2013 2012 Plan [Member] award	Dec. 31, 2012 2012 Plan [Member]	Dec. 04, 2013 2012 Plan [Member]	Dec. 04, 2013 2012 Plan [Member] Maximum [Member]	Dec. 31, 2013 2012 Plan [Member] Full Value Grant [Member] Prior to December 4, 2013 [Member]	Dec. 31, 2013 2012 Plan [Member] Full Value Grant [Member] On or After December 4, 2013 [Member]	Dec. 31, 2013 2012 Plan [Member] Option or Stock Appreciation Right Grant [Member]	Dec. 31, 2013 2012 Plan [Member] Restricted Stock Units [Member]	Dec. 31, 2012 2012 Plan [Member] Restricted Stock Units [Member]	Dec. 31, 2013 2012 Plan [Member] Time Vested Restricted Stock Units [Member]	Dec. 31, 2012 2012 Plan [Member] Time Vested Restricted Stock Units [Member]	Dec. 31, 2013 2012 Plan [Member] Restricted Stock Units With Performance Conditions [Member]	Dec. 31, 2012 2012 Plan [Member] Restricted Stock Units With Performance Conditions [Member]	Dec. 31, 2013 2012 Plan [Member] Common Stock [Member]	Dec. 31, 2013 2012 Plan [Member] Stock-Settled Restricted Stock Units [Member]	Dec. 31, 2013 2012 Plan [Member] Cash-Settled Restricted Stock Units [Member]	Dec. 31, 2013 2012 Plan [Member] Cash-Settled Stock Appreciation Rights [Member]	Sep. 30, 2008 Outside 2002 Plan [Member] Restricted Stock Units [Member]	Jan. 31, 2008 Outside 2002 Plan [Member] Restricted Stock Units [Member]	Dec. 31, 2013 Outside 2002 Plan [Member] Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant													4,493,099		2,869,821
Number of stock options, granted			449,704																							449,704	447,434	613	5,515
Stock Option and Incentive Plan, maturity date													Dec. 07, 2021
Number of shares of our common stock under 2012 plan																7,269,821
Number of awards for reduction of shares available for grant under 2012 Plan													1
Reduction in shares available for grant for one award under the plan																	1.71	1.5	1
Number of awards													2
Share-based compensation	$ 8,700,000	$ 5,400,000	$ 15,322,000	$ 10,227,000
Total income tax benefit recognized	2,300,000	1,200,000	3,800,000	2,600,000
Weighted-average grant-date fair value of options granted	$ 20.04	$ 15.54	$ 20.72	$ 15.92
Total intrinsic value of options exercised	6,100,000	400,000	18,200,000	6,000,000
Extended vesting period after employee termination, days			90 days
Restricted stock units granted					130,616	97,733	130,641	97,733			97,733									613	869	175,425	234,825	10,752	21,840					28,344	34,608	0
Cliff vesting period, in years			3 years	3 years
Restricted stock units, grant date fair value									6,000,000	3,700,000
Compensation expenses recognized period (years)													3 years	3 years
Restricted stock units vesting period																						3 years	3 years
Cash-settled restricted stock units, outstanding													2,632																			0
Number of restricted stock units settled													0	0
Number of cash settled restricted stock units				1,608
Restricted stock units settled cost				100,000
Total unrecognized compensation cost												40,100,000
Aggregate intrinsic value of equity classified restricted stock												$ 127,300,000
Weighted average recognition period, years												1 year 7 months 6 days