Exit, Disposal And Other Restructuring Activities (2011 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. 02, 2011 Restructuring 2011 Actions [Member]	Jul. 02, 2011 Restructuring 2011 Actions [Member] Discontinued Operations [Member]
Restructuring Reserve Disclosures [Line Items]
Restructuring charges	$ 5	$ 33	$ 23	$ 36	$ 141	$ 100
Planned employee terminations					960
Employee terminations					500