Basis of Presentation, Nature of Operations and Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Sep. 30, 2012	Apr. 02, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Aug. 01, 2008
Accumulated Other Comprehensive Income (Loss)
Foreign currency translation		$ 432				$ 307
Pension and other postretirement benefits		(6,454)				(4,409)
Derivative financial instruments		(35)				48
Available-for-sale securities		69				35
Total accumulated other comprehensive income (loss)		(5,988)			(6,328)	(4,019)
Noncontrolling Interest, Ownership Percentage by Parent			100.00%	67.00%			67.00%
Noncontrolling Interest Share Redemption	107
Foreign currency translation reclassifed to Accumulated other comprehensive income (loss)	167
Pension and other postretirement benefits reclassified to Accumulated other comprehensive income (loss)	(61)
Available for sale securities reclassified to Accumulated other comprehensive income (loss)	$ 1