Stockholders' Equity and Stock-Based Compensation - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended					12 Months Ended			1 Months Ended	12 Months Ended					1 Months Ended	12 Months Ended
	Dec. 31, 2013 tranche	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012	Nov. 11, 2013	Sep. 27, 2014 Series A Preferred Stock [Member]	Sep. 27, 2014 Stock Options [Member]	Sep. 28, 2013 Stock Options [Member]	Sep. 29, 2012 Stock Options [Member]	Dec. 31, 2013 Restricted Stock Units [Member]	Sep. 27, 2014 Restricted Stock Units [Member]	Sep. 28, 2013 Restricted Stock Units [Member]	Sep. 29, 2012 Restricted Stock Units [Member]	Sep. 27, 2014 Performance Shares [Member]	Sep. 27, 2014 2008 Equity Plan [Member]	Mar. 31, 2012 2012 Employee Stock Purchase Plan [Member]	Sep. 27, 2014 2012 Employee Stock Purchase Plan [Member]	Sep. 28, 2013 2012 Employee Stock Purchase Plan [Member]	Sep. 29, 2012 2012 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share portion entitled to purchase by right						0.0001
Preferred stock, par value		$ 0.01	$ 0.01			$ 0.01
Common stock, par value		$ 0.01	$ 0.01
Purchase price of each right		$ 107.00
Dividend record date		Dec. 02, 2013
Authorized value of common shares to be repurchased					$ 250
Period available for common stock to be repurchased		3 years
Common stock, shares authorized															31,500,000
Shares available for grant															10,700,000
Market stock units granted during the period	100,000
Percentage Of Award Vested Upon Meeting Defined Market Based Criteria	33.33%
Valuation of MSUs using Monte Carlo simulation model	$ 18.65
Share Based Compensation Arrangement Restricted Stock Units Liability Award	200,000
Minimum eligible percentage to receive target number of shares of company's common stock		0.00%
Maximum eligible percentage to receive target number of shares of company's common stock		200.00%
Stock-based compensation, period of vest term granted to employees, years		3 years					5 years
Percentage of vesting for stock granted to employees							20.00%
Percentage of vesting for stock granted to employees											25.00%
RSU, period of vest term granted to employees, years											4 years
Percentage of forfeiture rates, minimum		0.00%
Percentage of forfeiture rates, maximum		6.50%
Stock-based compensation expense							16.3	23.7	18.7		30.6	26.0	21.4
Tax benefit related to stock based compensation		15.3	17.2	12.2
Expense related to the acceleration of vesting for certain options assumed in acquisition		6.6	7.9	3.5
Unrecognized compensation expense							24.4				62.1
Weighted average period of unrecognized stock-based compensation, years							3 years				2 years 7 months
Intrinsic value of option exercised		34.7	37.6	20.4
Fair value of RSUs vested											22.6	27.3	15.7
Granted		2,500,000												500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value														$ 21.69
Number of shares that may be issued under Employee Stock Purchase Plan																2,500,000
Percentage of common stock price for ESPP																85.00%
Stock-based compensation expense		$ 50.0	$ 52.3	$ 40.6													$ 3.1	$ 2.7	$ 0.4
Share Based Compensation Arrangement By Share Based Payment Award Number Of Tranches	3
Share Based Compensation Arrangement By Share Based Payment Award Trading Period Considered For Determination Of Average Price	30 days
Common Stock Purchased By Employee	200,000
Shared Based Compensation Arrangement Restricted Stock Vesting Period										3 years