Purification Solutions Goodwill and Long-Lived Assets Impairment Charges (Tables)

12 Months Ended

Sep. 30, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Impairment Charges and Associated Tax Benefit

During the third quarter of fiscal 2015 and as a result of the impairment tests performed on goodwill and long-lived assets of the Purification Solutions reporting unit, the Company recorded impairment charges and an associated tax benefit in the Consolidated Statements of Operations as follows:

	Year Ended
	September 30, 2015
	(In millions)
Purification Solutions goodwill impairment charge	$	352
Purification Solutions long-lived assets impairment charge		210
Benefit for income taxes		(80	)
Impairment charges, after tax	$	482