Debt Debt (Debt With Contractual Term Less Than One Year)(Details) - USD ($)	Mar. 27, 2016	Dec. 31, 2015	Mar. 29, 2015
Short-term Debt [Line Items]
Short-term debt	$ 870,073,000	$ 1,201,380,000	$ 70,329,000
Commercial Paper [Member]
Short-term Debt [Line Items]
Short-term debt	869,972,000	1,201,380,000	70,329,000
Global Credit Facilities [Member]
Short-term Debt [Line Items]
Short-term debt	$ 101,000	$ 0	$ 0