Restructuring Costs (Tables)

6 Months Ended

Mar. 31, 2020

Restructuring and Related Activities [Abstract]

Schedule of Changes in Restructuring Reserves

The changes in restructuring reserves for the six months ended March 31, 2020 and 2019 are as follows (in millions):

	Total
Beginning Balance at September 30, 2019	$	8
Activity during the period:
Charges to continuing operations	15
Cash payments – continuing operations	(15		)
Other	(1		)
Total restructuring reserves at March 31, 2020	7
Less: non-current restructuring reserves	—
Restructuring reserves – current, at March 31, 2020	$	7
Balance at September 30, 2018	$	4
Activity during the period:
Charges to continuing operations	(1		)
Cash payments – continuing operations	(1		)
Total restructuring reserves at March 31, 2019	2
Less: non-current restructuring reserves	—
Restructuring reserves – current, at March 31, 2019	$	2