Goodwill and Other Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Finite Lived Intangible Assets Amortization Expense Next Twelve Months	$ 9
Finite Lived Intangible Assets Amortization Expense Year Two	9
Finite Lived Intangible Assets Amortization Expense Year Three	9
Finite Lived Intangible Assets Amortization Expense Year Four	9
Finite Lived Intangible Assets Amortization Expense Year Five	9
Amortization expense	$ 4	$ 3