Stock-Based Compensation (Details 2) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 03, 2012 Y	Mar. 29, 2011 Y
Restricted Shares and Restricted Share Units
Outstanding at the end of the period (in shares)	1,000	700
Stock options
Stock-Based Compensation
Weighted average fair value at the grant date for options issued (in dollars per share)	$ 12.02	$ 12.91
Weighted average assumptions under Black-Scholes valuation model
Expected stock price volatility (as a percent)	40.60%	40.10%
Risk free interest rate (as a percent)	1.40%	2.10%
Expected option term (in years)	6.1	6.0
Stock option activity, shares
Outstanding, at the beginning of the period (in shares)	8,827
Granted (in shares)	480
Exercised (in shares)	(452)
Forfeited or cancelled (in shares)	(82)
Outstanding at the end of the period (in shares)	8,773
Exercisable at the end of the period (in shares)	4,523
Weighted Average Exercise price
Outstanding at the beginning of the period (in dollars per share)	$ 23.51
Granted (in dollars per share)	$ 29.29
Exercised (in dollars per share)	$ 20.62
Forfeited or cancelled (in dollars per share)	$ 21.16
Outstanding at the end of the period (in dollars per share)	$ 24.00
Exercisable at the end of the period (in dollars per share)	$ 27.00
Weighted Average Remaining Contractual Term
Outstanding at the beginning of the period (in years)	4.8
Outstanding at the end of the period (in years)	4.8
Exercisable at the end of the period (in years)	3.7
Aggregate Intrinsic Value
Outstanding at the beginning of the period	$ 58,857,000
Outstanding at the end of the period	56,121,000
Exercisable at the end of the period	17,670,000
Total intrinsic value of options exercised	4,500,000	1,400,000
Unrecognized Stock-based Compensation Expense
Total unrecognized stock-based compensation expenses related to unvested stock option	20,900,000
Expected weighted average period for recognition of compensation expense related to nonvested stock option (in years)	2.5
Restricted Shares and Restricted Share Units
Unrecognized Stock-based Compensation Expense
Total unrecognized stock-based compensation expenses related to unvested stock option	18,000,000
Expected weighted average period for recognition of compensation expense related to nonvested stock option (in years)	3.6
Restricted Shares and Restricted Share Units
Outstanding at the beginning of the period (in shares)	826
Granted (in shares)	299
Vested (in shares)	(111)
Forfeited (in shares)	(7)
Outstanding at the end of the period (in shares)	1,007
Fair value of shares vested	$ 1,300,000	$ 200,000
Weighted Average Fair Value
Outstanding at the beginning of the period (in dollars per share)	$ 20.40
Granted (in dollars per share)	$ 28.98	$ 30.99
Vested (in dollars per share)	$ 11.41
Forfeited (in dollars per share)	$ 19.59
Outstanding at the end of the period (in dollars per share)	$ 23.94