Equity Compensation Plans - Additional Information (Details) (USD $)	0 Months Ended		3 Months Ended		12 Months Ended
	Apr. 01, 2014	Oct. 01, 2012	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Oct. 01, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash received from stock option exercised			$ 8,336,000	$ 7,804,000
Nonqualified stock options contractual term	10 years
Excess tax benefit from stock options exercised			4,421,000	7,006,000
Number of Stock Issued During Period Shares Stock Options Exercised Net Of Taxes			0		27,159,000
Total unrecognized compensation cost related to nonvested share-based compensation arrangements			35,447,000
Unrecognized compensation cost weighted average period			2 years 4 months 13 days
Nonvested stock options			2,019,385
Stock options expected to vest			1,634,765
Total fair value of options vested			3,005,000	3,415,000
Grant date fair value restricted stock vested			2,502,000	2,167,000
Authorized payroll deductions on base salary		20.00%				20.00%
Maximum payroll deductions on short-term incentive compensation		50.00%
Maximum amount of payroll deductions		$ 25,000				$ 25,000
Purchase discount		5.00%
Common stock issued, discounted price (in Dollars per share)			$ 67.83
2013 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved and available for future issuance			12,809,778
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonqualified stock options, service vesting period	4 years
Stock options | Key employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonqualified stock options granted	1,177,579
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonqualified stock options, service vesting period	4 years
Restricted stock options			436,943		442,310
Stock options expected to vest			362,858
Restricted stock | Key employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted	211,826
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares issued			5,453