Other Assets (Tables)

3 Months Ended

Dec. 31, 2018

Other Assets, Noncurrent [Abstract]

Summary of other assets

Other assets are summarized as follows (in millions):

	December 31, 2018		September 30, 2018
Investments in non-consolidated joint ventures	$	112	$	102
Asbestos-related recoveries (see Note 21)	60		76
Unamortized revolver debt issuance costs	6		7
Capitalized software costs, net	24		26
Deferred income tax assets, net	137		140
Assets for uncertain tax positions	51		53
Prepaid pension costs	154		152
Intangible assets (1)	17		18
Other	33		22
Other assets	$	594	$	596

⁽¹⁾  Primarily relates to customer relationships. As of December 31, 2018, the gross carrying value was $22 million and the accumulated amortization was $5 million. As of September 30, 2018, the gross carrying value was $22 million and the accumulated amortization was $4 million. The weighted average amortization periods for customer relationships is approximately 19 years.