Risk Management (Schedule Of Largest Notional Amounts Of The Positions To Buy Or Sell Foreign Currency) (Details) (USD $) In Millions, unless otherwise specified	Apr. 04, 2015 position	Dec. 31, 2014 position
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Number of net notional positions to buy or sell foreign currency disclosed (in number of positions)	5	5
British Pound
Foreign Currency Contracts
Notional amount of foreign currency derivatives	166	34
Euro
Foreign Currency Contracts
Notional amount of foreign currency derivatives	154	214
Chinese Renminbi
Foreign Currency Contracts
Notional amount of foreign currency derivatives	(146)	(161)
Norwegian Krone
Foreign Currency Contracts
Notional amount of foreign currency derivatives	(86)	(90)
Brazilian Real
Foreign Currency Contracts
Notional amount of foreign currency derivatives	(38)	(28)