Net Property (Tables)

3 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Summary of net property

Net property is summarized as follows (in millions):

	December 31, 2017			September 30, 2017
Property at cost:
Land and land improvements	$	30		$	30
Buildings	241			240
Machinery and equipment	908			892
Company-owned tooling	127			126
Construction in progress	53			69
Total	1,359			1,357
Less: accumulated depreciation	(895		)	(883		)
Net property	$	464		$	474