Income Taxes (Details Textuals) (USD $)	3 Months Ended									12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2009	Sep. 30, 2009	Jun. 30, 2009	Mar. 31, 2009	Dec. 31, 2008	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009	Sep. 30, 2008
Income Taxes (Textuals)
Total valuation allowance adjustment					$ (69,000,000)		$ (10,000,000)				$ (87,000,000)	$ 245,000,000
Valuation allowance adjustment recorded as income tax expense	(30,000,000)		(13,000,000)		(93,000,000)		(3,000,000)	(45,000,000)	300,000,000		(111,000,000)	252,000,000
Amount of reduction in the period in cumulative translation adjustments related to the change in the valuation allowance for a specified deferred tax asset					24,000,000
Gross tax effected unrecognized tax benefits	1,357,000,000	1,262,000,000				1,049,000,000				1,357,000,000	1,262,000,000	1,049,000,000	814,000,000
Amount of unrecognized tax benefits which may impact effective tax rate	1,164,000,000	1,063,000,000				874,000,000				1,164,000,000	1,063,000,000	874,000,000
Total net accrued interest, net of tax benefit	77,000,000	68,000,000				68,000,000				77,000,000	68,000,000	68,000,000
Number of months estimated for conclusion period for tax examinations, appellate proceedings and/or tax litigation										12 months
Potential adjustment to tax expense due to the conclusion of tax examinations, appellate proceedings and/or tax litigation within the next 12 months	100,000,000									100,000,000
Uncertain tax position adjustments		(20,000,000)	(38,000,000)		31,000,000	(55,000,000)	(17,000,000)
Interest and penalties included in change in uncertain tax positions					26,000,000
Increase/ decrease in reserve for uncertain tax positions						(32,000,000)	(33,000,000)
Adjustment to goodwill related to change in reserve for uncertain tax positions						23,000,000	(16,000,000)
Change in tax status of subsidiary						(59,000,000)		(30,000,000)
Total tax adjustment for change in tax status of subsidiary						(84,000,000)
Adjustment to goodwill related to change in tax status of subsidiary						(25,000,000)
Medicare Part D		(2,000,000)		18,000,000							16,000,000
Consolidated domestic income from continuing operations before income taxes and noncontrolling interests										787,000,000	666,000,000	(263,000,000)
Consolidated non-U.S. income from continuing operations before income taxes and noncontrolling interests										1,324,000,000	1,097,000,000	(55,000,000)
Income taxes paid										384,000,000	535,000,000	326,000,000
Undistributed earnings of consolidated foreign subsidiaries on which domestic income taxes have not been provided	5,700,000,000									5,700,000,000
Net operating loss, carryforwards	3,800,000,000									3,800,000,000
Net operating loss carryforwards that will expire	1,400,000,000									1,400,000,000
Expiration period of net operating loss carryforwards										2012-2030
U.S foreign tax credit, carryforwards	961,000,000									961,000,000
Expiration period of U.S foreign tax credit carryforwards										2016-2021
IRS Appeals [Member]
Income Taxes (Textuals)
Fiscal years currently under exam by the Internal Revenue Service (IRS)										2004-2006
Internal Revenue Service (IRS) [Member]
Income Taxes (Textuals)
Fiscal years currently under exam by the Internal Revenue Service (IRS)										2007-2009
China [Member]
Income Taxes (Textuals)
Tax rate due to change in status												15.00%
Europe [Member]
Income Taxes (Textuals)
Valuation allowance adjustment recorded as income tax expense		14,000,000
Mexico [Member]
Income Taxes (Textuals)
Valuation allowance adjustment recorded as income tax expense		(39,000,000)
Fiscal years currently under exam by the Internal Revenue Service (IRS)										2003 - 2004
Various Jurisdictions [Member]
Income Taxes (Textuals)
Valuation allowance adjustment recorded as income tax expense		$ 20,000,000