Inventories (Details) - USD ($) $ in Millions		Mar. 31, 2017	Sep. 30, 2016
Inventory Disclosure [Abstract]
Finished goods		$ 130	$ 125
Work in process		30	26
Raw materials, parts and supplies		178	165
Total inventories	[1]	$ 338	$ 316

[1] As of March 31, 2017, Assets and Liabilities held for sale were: (i) $1 million Cash and cash equivalents; (ii) $8 million Receivables, trade and other, net; (iii) $1 million Inventories; (iv) $1 million Goodwill; (v) $6 million Accounts and notes payable; and (vi) $2 million Noncontrolling interests. As of September 30, 2016, Assets and Liabilities held for sale were: (i) $1 million Cash and cash equivalents; (ii) $8 million Receivables, trade and other, net; (iii) $1 million Inventories; (iv) $3 million Net property; (v) $5 million Accounts and notes payable; and (vi) $3 million Noncontrolling interests.