Equity (Changes in Comprehensive Income) (Details) (USD $) In Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 01, 2011	Oct. 02, 2010	Oct. 01, 2011	Oct. 02, 2010	Jan. 01, 2011
Net income	$ 290	$ 337	$ 997	$ 1,055	$ 1,240
Foreign currency translation adjustments, Pre-tax amount	(188)	163	(45)	5
Foreign currency translation adjustments, Tax (expense) or benefit	0	0	0	0
Foreign currency translation adjustments, After-tax amount	(188)	163	(45)	5
Unrealized gain (loss) on cash flow hedges, Pre-tax amount	(1)	(2)	(36)	(41)
Unrealized gain (loss) on cash flow hedges, Tax (expense) or benefit	0	1	12	12
Unrealized gain (loss) on cash flow hedges, After-tax amount	(1)	(1)	(24)	(29)
Reclassification to net earnings, Pre-tax amount	1	6	(10)	37
Reclassification to net earnings, Tax (expense) or benefit	0	(1)	4	(10)
Reclassification to net earnings, After-tax amount	1	5	(6)	27
Net experience gain (loss), Pre-tax amount	4	(27)	(9)	(12)
Net experience gain (loss), Tax (expense) or benefit	(2)	8	2	3
Net experience gain (loss), After-tax amount	2	(19)	(7)	(9)
Prior service credit (cost), Pre-tax amount	1	(2)	0	0
Prior service credit (cost), Tax (expense) or benefit	0	0	0	(17)
Prior service credit (cost), After-tax amount	1	(2)	0	(17)
Total adjustment to OCI, Pre-tax amount	(146)	166	7	74
Total adjustment to OCI, Tax (expense) or benefit	(15)	(1)	(19)	(39)
Total adjustment to OCI, After-tax amount	(161)	165	(12)	35	52
Total comprehensive income	129	502	985	1,090
Reclassification to Net Earnings [Member]
Net experience loss, Pre-tax amount	33	25	97	76
Net experience loss, Tax (expense) or benefit	(12)	(8)	(34)	(24)
Net experience loss, After-tax amount	21	17	63	52
Prior service credit (cost), Pre-tax amount	4	3	10	9
Prior service credit (cost), Tax (expense) or benefit	(1)	(1)	(3)	(3)
Prior service credit (cost), After-tax amount	$ 3	$ 2	$ 7	$ 6