Other Financial Data (Other Income (Expense)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Interest income (expense), net:
Interest expense	$ (38)	$ (33)	$ (102)	$ (100)
Interest income	7	4	17	15
Interest income (expense), net:	(31)	(29)	(85)	(85)
Other:
Loss from the extinguishment of long-term debt	(37)	0	(37)	0
Investment impairments	0	(1)	0	(3)
Foreign currency gain (loss)	4	(1)	(6)	(8)
Gains on equity method investments	11	8	13	7
Other	(4)	2	(4)	7
Total Other Income (Expense)	$ (26)	$ 8	$ (34)	$ 3