Fair Value Measurements (Fair Value Of Assets And Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Jun. 28, 2014	Dec. 31, 2013
Assets:
Available-for-sale securities, fair value	$ 236	$ 232
Level 1 [Member]
Liabilities:
Foreign exchange derivative contracts		0
Interest agreement derivative contracts		0
Level 1 [Member] | Foreign Exchange Contracts [Member]
Assets:
Foreign exchange derivative contracts, fair value		0
Level 1 [Member] | Government, agency, and government-sponsored enterprise obligations
Assets:
Available-for-sale securities, fair value		0
Level 1 [Member] | Corporate bonds
Assets:
Available-for-sale securities, fair value		0
Level 1 [Member] | Mortgage-backed Securities [Member]
Assets:
Available-for-sale securities, fair value		0
Level 1 [Member] | Common stock and equivalents
Assets:
Available-for-sale securities, fair value		2
Level 2 [Member]
Liabilities:
Foreign exchange derivative contracts	3	2
Interest agreement derivative contracts	3	3
Level 2 [Member] | Foreign Exchange Contracts [Member]
Assets:
Foreign exchange derivative contracts, fair value	1	4
Level 2 [Member] | Government, agency, and government-sponsored enterprise obligations
Assets:
Available-for-sale securities, fair value		15
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	15
Level 2 [Member] | Corporate bonds
Assets:
Available-for-sale securities, fair value		7
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	8
Level 2 [Member] | Mutual Funds [Member]
Assets:
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	11
Level 2 [Member] | Mortgage-backed Securities [Member]
Assets:
Available-for-sale securities, fair value		11
Level 2 [Member] | Common stock and equivalents
Assets:
Available-for-sale securities, fair value		0
Estimate of Fair Value, Fair Value Disclosure [Member]
Liabilities:
Foreign exchange derivative contracts		2
Interest agreement derivative contracts		3
Estimate of Fair Value, Fair Value Disclosure [Member] | Foreign Exchange Contracts [Member]
Assets:
Foreign exchange derivative contracts, fair value		4
Estimate of Fair Value, Fair Value Disclosure [Member] | Government, agency, and government-sponsored enterprise obligations
Assets:
Available-for-sale securities, fair value		15
Estimate of Fair Value, Fair Value Disclosure [Member] | Corporate bonds
Assets:
Available-for-sale securities, fair value		7
Estimate of Fair Value, Fair Value Disclosure [Member] | Mortgage-backed Securities [Member]
Assets:
Available-for-sale securities, fair value		11
Estimate of Fair Value, Fair Value Disclosure [Member] | Common stock and equivalents
Assets:
Available-for-sale securities, fair value		$ 2