Business Restructuring Reserves And Programs (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended		3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Position	Jun. 30, 2014 Position
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 10	$ 42	$ 25	$ 49	$ 165	$ 26
Employee Separation Costs | Fiscal 2014 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			18		155
Lease Obligations | Fiscal 2014 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring Charges					9
US Enhanced Separation Program [Member] | Employee Separation Costs | Fiscal 2014 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated					172
EMEA approved plan [Member] | Employee Separation Costs | Fiscal 2014 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring Charges							39
Restructuring and Related Cost, Number of Positions Eliminated							165	121
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Depreciation, Additional Expense				35
EMEA approved plan [Member] | Employee Separation Costs | Fiscal 2014 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring Charges					123
US Voluntary Program [Member] | Employee Separation Costs | Fiscal 2014 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring Charges					24
US Enhanced Separation Program [Member] | Employee Separation Costs | Fiscal 2014 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring Charges					$ 10