Accumulated Other Comprehensive Loss and Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Components of Accumulated other comprehensive loss
Balance at the beginning of the period	$ (1,027)	$ (1,770)
Other comprehensive income (loss) before reclassifications	(15)	(15)
Amounts reclassified from Accumulated Other Comprehensive Loss	20	30
Other comprehensive income	5	15
Balance at the end of the period	(1,022)	(1,755)
Foreign Currency Translation Adjustments
Components of Accumulated other comprehensive loss
Balance at the beginning of the period	93	81
Other comprehensive income (loss) before reclassifications	(6)	(10)
Other comprehensive income	(6)	(10)
Balance at the end of the period	87	71
Pension and Post Retirement Benefit Adjustments
Components of Accumulated other comprehensive loss
Balance at the beginning of the period	(1,110)	(1,857)
Amounts reclassified from Accumulated Other Comprehensive Loss	18	32
Other comprehensive income	18	32
Balance at the end of the period	(1,092)	(1,825)
Deferred Gains/Losses on Hedge Contracts
Components of Accumulated other comprehensive loss
Balance at the beginning of the period	(10)	6
Other comprehensive income (loss) before reclassifications	(9)	(5)
Amounts reclassified from Accumulated Other Comprehensive Loss	2	(2)
Other comprehensive income	(7)	(7)
Balance at the end of the period	$ (17)	$ (1)