Restructuring (Restructuring Activities And Related Reserves) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]
Reserve at beginning of period	$ 11
Charges	3	4
Costs charged against assets	(1)
Cash paid	(2)
Foreign currency translation adjustment	(1)
Reserve at end of period	10
Severance And Employee Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Reserve at beginning of period	9
Charges	1
Cash paid	(1)
Foreign currency translation adjustment	(1)
Reserve at end of period	8
Asset Impairment And Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Charges	1
Costs charged against assets	(1)
Other Restructuring Costs [Member]
Restructuring Cost and Reserve [Line Items]
Reserve at beginning of period	2
Charges	1
Cash paid	(1)
Reserve at end of period	$ 2