Share-Based Compensation-Valuation Parameters (Details 1) (USD $)	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Employee Stock Option [Member]
Fair value of stock options granted to employees, officers and non-employee board members and ESPP shares granted to employees
Expected volatility	31.00%	32.00%	32.00%	38.00%
Risk-free interest rate	1.19%	0.72%	1.22%	0.68%
Expected term	4 years 2 months	4 years 4 months	4 years 5 months	4 years 5 months
Estimated annual forfeiture rate	8.79%	8.51%	8.79%	8.51%
Weighted-average fair value at grant date	$ 24.07	$ 16.22	$ 18.83	$ 16.44
Employee Stock Purchase Plan Shares [Member]
Fair value of stock options granted to employees, officers and non-employee board members and ESPP shares granted to employees
Expected volatility	31.00%	33.00%	31.00%	33.00%
Risk-free interest rate	0.08%	0.13%	0.08%	0.13%
Expected term	0 years 6 months	0 years 6 months	0 years 6 months	0 years 6 months
Weighted-average fair value at grant date	$ 17.25	$ 12.54	$ 17.25	$ 12.54
Maximum [Member] | Employee Stock Option [Member]
Fair value of stock options granted to employees, officers and non-employee board members and ESPP shares granted to employees
Dividend yield	1.25%	0.00%	1.44%	0.00%
Maximum [Member] | Employee Stock Purchase Plan Shares [Member]
Fair value of stock options granted to employees, officers and non-employee board members and ESPP shares granted to employees
Dividend yield	1.25%	0.00%	1.25%	0.00%
Minimum [Member] | Employee Stock Option [Member]
Fair value of stock options granted to employees, officers and non-employee board members and ESPP shares granted to employees
Dividend yield	1.20%	0.00%	1.20%	0.00%
Minimum [Member] | Employee Stock Purchase Plan Shares [Member]
Fair value of stock options granted to employees, officers and non-employee board members and ESPP shares granted to employees
Dividend yield	1.25%	0.00%	1.25%	0.00%