Exit, Disposal And Other Restructuring Activities (2010 Actions Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Dec. 31, 2011	Jan. 01, 2011	Jul. 03, 2010 Restructuring 2010 Actions [Member]
Restructuring Reserve Disclosures [Line Items]
Restructuring charges	$ 5	$ 33	$ 23	$ 36	$ 85
Planned employee terminations					900
Number of employees remaining to be terminated					40