Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Consolidated Statement of Comprehensive Income [Abstract]
Net income	$ 296	$ 290	$ 955	$ 997
Other comprehensive income, before-tax:
Foreign currency translation adjustments, before-tax	103	(188)	75	(45)
Cash flow hedges, before-tax:
Unrealized gain (loss) on cash flow hedges, before-tax	(1)	(1)	(9)	(36)
Reclassification to net income, before-tax	3	1	12	(10)
Postretirement and postemployment benefit amounts arising during the period, before-tax:
Net experience gain (loss), before-tax	(27)	4	(43)	(9)
Prior service credit (cost), before-tax	(1)	1	(1)	0
Postretirement and postemployment benefits reclassification to net income, before-tax:
Net experience loss, before-tax	45	33	125	97
Prior service cost, before-tax	2	4	9	10
Other comprehensive income (loss), before-tax	124	(146)	168	7
Other comprehensive income (loss), tax (expense) or benefit
Foreign currency translation adjustments, tax (expense) or benefit	0	0	2	0
Cash flow hedges, tax effect:
Unrealized gain (loss) on cash flow hedges, tax (expense) or benefit	0	0	3	12
Reclassification to net income, tax (expense) or benefit	(1)	0	(4)	4
Postretirement and postemployment benefit amounts arising during the period, tax effect:
Net experience gain (loss), tax (expense) or benefit	8	(2)	11	2
Prior service credit (cost), tax (expense) or benefit	0	0	0	0
Postretirement and postemployment benefits reclassification to net income, tax effect:
Net experience loss, tax (expense) or benefit	(15)	(12)	(42)	(34)
Prior service cost, tax (expense) or benefit	(1)	(1)	(3)	(3)
Other comprehensive income (loss), tax (expense) or benefit	(9)	(15)	(33)	(19)
Other comprehensive income (loss), after tax
Foreign currency translation adjustments, after-tax	103	(188)	77	(45)
Cash flow hedges, after-tax:
Unrealized gain (loss) on cash flow hedges, after-tax	(1)	(1)	(6)	(24)
Reclassification to net income, after-tax	2	1	8	(6)
Postretirement and postemployment benefit amounts arising during the period, after-tax:
Net experience gain (loss), after-tax	(19)	2	(32)	(7)
Prior service credit (cost), after-tax	(1)	1	(1)	0
Postretirement and postemployment benefits reclassification to net income, after-tax:
Net experience loss, after-tax	30	21	83	63
Prior service cost, after-tax	1	3	6	7
Other comprehensive income, after-tax	115	(161)	135	(12)
Comprehensive income	$ 411	$ 129	$ 1,090	$ 985