Note 4. Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2017	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Buildings and Improvements, Gross	$ 1,357	$ 1,311
Machinery and Equipment, Gross	4,827	4,415
Construction in Progress, Gross	521	431
Land	149	159
Property, Plant and Equipment, Gross	6,854	6,316
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(4,352)	(4,121)
Property, Plant and Equipment, Net	0	0
Property, Plant and Equipment, Net	2,502	2,195
Assets Leased to Others [Member]
Property, Plant and Equipment [Line Items]
Buildings and Improvements, Gross	162	187
Land	7	20
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ (123)	$ (126)