Net Property (Tables)

6 Months Ended

Mar. 31, 2017

Property, Plant and Equipment [Abstract]

Summary of Net Property

Net property is summarized as follows (in millions):

	March 31, 2017			September 30, 2016
Property at cost:
Land and land improvements	$	29		$	30
Buildings	230			231
Machinery and equipment	846			839
Company-owned tooling	118			113
Construction in progress	43			56
Total	1,266			1,269
Less: accumulated depreciation	(836		)	(830		)
Net property	$	430		$	439