Intangible Assets And Goodwill (Amortized Intangible Assets, Excluding Goodwill, By Business Segment) (Details) (USD $) In Millions, unless otherwise specified	Mar. 29, 2014	Dec. 31, 2013
Indefinite-lived Intangible Assets by Segment [Line Items]
Gross Carrying Amount	$ 1,275	$ 1,254
Accumulated Amortization	1,172	1,167
Government
Indefinite-lived Intangible Assets by Segment [Line Items]
Gross Carrying Amount	73	55
Accumulated Amortization	48	48
Enterprise
Indefinite-lived Intangible Assets by Segment [Line Items]
Gross Carrying Amount	1,202	1,199
Accumulated Amortization	$ 1,124	$ 1,119