Accounting Policies (Details)	3 Months Ended	9 Months Ended
	Oct. 02, 2015	Oct. 02, 2015
Basis of Presentation
Number of additional days in the period	1 day	1 day
Minimum
Basis of Presentation
Length of fiscal year		364 days
Length of fiscal quarter		91 days
Maximum
Basis of Presentation
Length of fiscal year		364 days
Length of fiscal quarter		98 days