Accumulated Other Comprehensive Loss and Other Comprehensive Income (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Pension adjustments, pre-tax:
Amortization of net actuarial loss included in net periodic pension cost, pre-tax	$ 48	$ 31
Amortization of prior service cost included in net periodic pension cost, pre-tax	1	1
Pension adjustments, net, pre-tax	49	32
Deferred gains/losses on hedge contracts, pre-tax:
Current deferrals,pre-tax	(6)	8
Reclassification adjustments included in net income, pre-tax	(2)	(8)
Deferred gains/losses on hedge contracts, net, pre-tax	(8)
Foreign currency translation adjustment, pre-tax	(2)	(3)
Other comprehensive income (loss), pre-tax	39	29
Pension adjustments, tax:
Amortization of net actuarial loss included in net periodic pension cost, tax	(17)	(11)
Pension adjustments, net, tax	(17)	(11)
Deferred gains/losses on hedge contracts, tax:
Current deferrals,tax	1	(2)
Reclassification adjustments included in net income, tax		2
Deferred gains/losses on hedge contracts, net, tax	1
Foreign currency translation adjustment, Tax	(8)	6
Other comprehensive income (loss), Tax	(24)	(5)
Pension adjustments, after tax:
Amortization of net actuarial loss included in net periodic pension cost, after tax	31	20
Amortization of prior service cost included in net periodic pension cost, after tax	1	1
Pension adjustments, net, after tax	32	21
Deferred gains/losses on hedge contracts, after tax:
Current deferrals, after tax	(5)	6
Reclassification adjustments included in net income, after tax	(2)	(6)
Deferred gains/losses on hedge contracts, net, after tax	(7)
Foreign currency translation adjustment, after Tax	(10)	3
Other comprehensive income	$ 15	$ 24