Stockholders Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended		9 Months Ended
	Dec. 15, 2015	Jan. 31, 2014	Mar. 31, 2016	Mar. 31, 2015	Sep. 30, 2015
Stockholders Equity Note [Line Items]
Number of shares granted to employees			0
Performance share expense recognition period			3 years
Shares cancelled			0
Weighted-average grant date fair value of options granted			$ 36.28	$ 125.41
Performance Awards
Stockholders Equity Note [Line Items]
Shares issued to the employees	6,530
Shares cancelled	2,943
Estimated unrecognized employee compensation cost related to non-vested stock options granted			$ 0.4
Estimated unrecognized employee compensation cost related to non-vested stock options granted, Weighted-average period of recognition			8 months 12 days
Performance Awards | Employees
Stockholders Equity Note [Line Items]
Performance share expense recognition period		3 years
Common stock price		$ 102.46
Non Vested Stock Options
Stockholders Equity Note [Line Items]
Estimated unrecognized employee compensation cost related to non-vested stock options granted			$ 202.5
Estimated unrecognized employee compensation cost related to non-vested stock options granted, Weighted-average period of recognition			2 years
2011 Incentive Award Plan
Stockholders Equity Note [Line Items]
Common stock shares reserved for issuance			10,529,412
Maximum | Performance Awards
Stockholders Equity Note [Line Items]
Number of shares granted to employees					28,411
Maximum | Performance Awards | Employees
Stockholders Equity Note [Line Items]
Number of shares granted to employees		28,411
Maximum | 2011 Incentive Award Plan
Stockholders Equity Note [Line Items]
Stock options granted, term			10 years
Minimum | Performance Awards | Employees
Stockholders Equity Note [Line Items]
Common stock price		$ 47.53