Stock-Based Compensation Performance Share Units Activity (Details) (PSU, USD $)	3 Months Ended
	Mar. 29, 2015
PSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, shares, beginning of period	43,219
Outstanding, weighted average fair value, beginning of period	$ 74.35
Granted, shares	65,982	[1]
Granted, weighted average fair value	$ 68.10	[1]
Adjustments due to the Special Cash Dividend	11,575	[1]
Outstanding and nonvested, shares, end of period	120,776	[1],[2]
Outstanding and nonvested, weighted average fair value, end of period	$ 63.81	[1],[2]
Adjustments due to the Special Cash Dividend - PSUs Not Deemed Granted	5,907	[1]

[1] Represents shares of PSUs for which performance targets have been established and which are deemed granted under U.S. GAAP.

[2] The weighted average fair value of outstanding PSUs as of March 29, 2015 reflects the adjustment for the Special Cash Dividend.