Nonpension Postretirement and Postemployment Benefits (Change in Projected Benefit Obligations, Plan Assets, and Funded Status, Postemployment) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Amounts recognized in the Consolidated Balance Sheet consist of
Pension	$ 150	$ 333
Postemployment [Member]
Defined Benefit Plan Change In Accumulated Benefit Obligation Rollforward [Abstract]
Beginning of year	85	74
Service cost	6	6	6
Interest cost	4	4	4
Actuarial loss	6	8
Benefits paid	(8)	(7)
Foreign currency adjustments	0	0
End of year	93	85	74
Funded status	(93)	(85)
Amounts recognized in the Consolidated Balance Sheet consist of
Other current liabilities	(9)	(8)
Other liabilities	(84)	(77)
Net amount recognized	(93)	(85)
Amounts recognized in accumulated other comprehensive income consist of
Net experience loss	44	43
Net amount recognized	$ 44	$ 43