Stock-Based Compensation (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Stock-based compensation, additional disclosures
Common stock reserved for future issuance or settlement (in shares)	7,100,000		7,100,000
Weighted Average Grant Date Fair Value
Payments related to tax withholding			$ 4,237,000	$ 4,288,000
Stock Options
General award terms
Award vesting period			4 years
Weighted average assumptions
Weighted average fair value (in dollars per share)	$ 10.86	$ 9.83	$ 11.33	$ 9.76
Risk-free interest rate (as a percent)			1.30%	0.60%
Expected dividend yield (as a percent)			0.00%	0.00%
Expected life			4 years 7 months 6 days	4 years 9 months 18 days
Expected volatility factor (as a percent)			39.30%	48.90%
Stock options activity
Outstanding, beginning of period (in shares)			1,852,118
Granted (in shares)			338,413
Exercised (in shares)			(383,585)
Cancelled / Forfeited (in shares)			(178,444)
Outstanding, end of period (in shares)	1,628,502		1,628,502
Vested and exercisable, end of period (in shares)	857,705		857,705
Vested and expected to vest, end of period (in shares)	1,495,621		1,495,621
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)			$ 14.68
Granted (in dollars per share)			$ 32.61
Exercised (in dollars per share)			$ 11.55
Cancelled / Forfeited (in dollars per share)			$ 18.95
Outstanding, end of period (in dollars per share)	$ 18.67		$ 18.67
Vested and exercisable, end of period (in dollars per share)	$ 14.48		$ 14.48
Vested and expected to vest, end of period (in dollars per share)	$ 18.28		$ 18.28
Weighted Average Remaining Contractual Term
Outstanding, end of period			7 years 1 month 2 days
Vested and exercisable, end of period			5 years 11 months 5 days
Vested and expected to vest, end of period			6 years 9 months 14 days
Aggregate Intrinsic Value
Outstanding, end of period	37,664,000		37,664,000
Vested and exercisable, end of period	23,431,000		23,431,000
Vested and expected to vest, end of period	35,174,000		35,174,000
Weighted Average Grant Date Fair Value
Total unrecognized compensation cost	5,900,000		5,900,000
Total unrecognized compensation cost, period of recognition			2 years 7 months 6 days
Total intrinsic value of options exercised	2,700,000	12,500,000	9,200,000	23,200,000
Cash proceeds from option exercises			4,400,000	9,100,000
Payments related to tax withholding			4,200,000	4,300,000
Stock Options | Minimum
General award terms
Contractual terms			7 years
Stock Options | Maximum
General award terms
Contractual terms			10 years
Restricted Stock Units
General award terms
Award vesting period			4 years
Restricted stock units activity
Outstanding, beginning of period (in shares)			1,030,839
Granted (in shares)			398,679
Settled (in shares)			(337,374)
Cancelled / Forfeited (in shares)			(202,221)
Outstanding, end of period (in shares)	889,923		889,923
Vested and expected to vest (in shares)	744,965		744,965
Weighted Average Grant Date Fair Value
Outstanding, beginning of period (in dollars per share)			$ 17.69
Granted (in dollars per share)	$ 38.10	$ 25.84	$ 32.61	$ 23.40
Settled (RSUs) (in dollars per share)			$ 17.97
Cancelled / Forfeited (in dollars per share)			$ 19.48
Outstanding, end of period (in dollars per share)	$ 23.87		$ 23.87
Vested and expected to vest, end of period (in dollars per share)			$ 23.93
Total fair value of shares vested from RSU grants	5,000,000	6,800,000	12,200,000	13,100,000
Total unrecognized compensation cost	$ 18,300,000		$ 18,300,000
Total unrecognized compensation cost, period of recognition			2 years 9 months 18 days