Fair Value Measurements And Financial Instruments Fair Value Measurements And Financial Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended								12 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 28, 2013	Dec. 28, 2013	Sep. 27, 2014 Indefinite-lived Intangible Assets [Member]	Sep. 27, 2014 Operating Expense [Member]	Jun. 29, 2013 Customer Lists And Relationships [Member] Operating Expense [Member]	Sep. 27, 2014 Long Lived Asset Charges [Member]	Jun. 29, 2013 Intangible Asset Charges [Member] Customer Lists And Relationships [Member]	Jun. 28, 2014 2012 Business Realignment Restructuring Plan [Member] Long Lived Asset Charges [Member]	Sep. 27, 2014 2012 Business Realignment Restructuring Plan [Member] Long Lived Asset Charges [Member] Operating Expense [Member]	Jun. 28, 2014 2012 Business Realignment Restructuring Plan [Member] Long Lived Asset Charges [Member] Operating Expense [Member]	Mar. 29, 2014 2012 Business Realignment Restructuring Plan [Member] Long Lived Asset Charges [Member] Operating Expense [Member]	Dec. 28, 2013 2012 Business Realignment Restructuring Plan [Member] Long Lived Asset Charges [Member] Operating Expense [Member]
Realized Gain (Loss) on Marketable Securities, Cost Method Investments, and Other Investments	$ 3	$ 4	$ 9
Special charges, fixed asset impairment charges								5		14	4	2	1	13
Impairment of Intangible Assets, Finite-lived							13		13
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)						25
Other Assets, Fair Value Disclosure					34
Fair Value, Estimate Not Practicable, Cost Method Investments	70			69
Fixed rate debt obligations fair value disclosure	2,312
Fixed rate debt obligations carrying value	2,291
Other debt carrying value	1,573
cash equivalents at carrying value excluding money market securities	$ 628			$ 498