Other Financial Data (Investments) (Details) (USD $) In Millions, unless otherwise specified	Mar. 29, 2014	Dec. 31, 2013
Investments
Short-term Investments	$ 260	$ 251
Available-For-Sale Securities [Member]
Investments
Short-term Investments	34	35
Government, agency, and government-sponsored enterprise obligations
Investments
Short-term Investments	15	15
Corporate bonds
Investments
Short-term Investments	8	7
Mutual funds
Investments
Short-term Investments	11	11
Common stock and equivalents
Investments
Short-term Investments	0	2
Other investments, at cost
Investments
Short-term Investments	211	201
Equity method investments
Investments
Short-term Investments	$ 15	$ 15