Restructuring Costs (Tables)

3 Months Ended

Dec. 31, 2018

Restructuring and Related Activities [Abstract]

Schedule of changes in restructuring reserves

The changes in restructuring reserves for the three months ended December 31, 2018 and 2017 are as follows (in millions):

	Employee Termination Benefits			Plant Shutdown & Other			Total
Beginning Balance at September 30, 2018	$	4		$	—		$	4
Activity during the period:
Charges to continuing operations	—			—			—
Cash payments – continuing operations	(1		)	—			(1		)
Total restructuring reserves at December 31, 2018	3			—			3
Less: non-current restructuring reserves	(1		)	—			(1		)
Restructuring reserves – current, at December 31, 2018	$	2		$	—		$	2
Balance at October 1, 2017	$	5		$	1		$	6
Activity during the period:
Charges to continuing operations	2			—			2
Cash payments – continuing operations	(2		)	(1		)	(3		)
Total restructuring reserves at December 31, 2017	5			—			5
Less: non-current restructuring reserves	(2		)	—			(2		)
Restructuring reserves – current, at December 31, 2017	$	3		$	—		$	3