Goodwill and Other Intangibles (Tables)

6 Months Ended

Mar. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Goodwill by Reportable Segment

The following is a progression of goodwill by reportable segment for the six months ended March 31, 2020.

(In millions)	Life Sciences			Personal Care & Household			Specialty Additives			Performance Adhesives		Intermediates and Solvents		(a)	Total
Balance at September    30, 2019	$	836		$	355		$	609		$	453	$	—		$	2,253
Impairment		—			(356	)		(174	)		—		—			(530	)
Currency translation		(1	)		1			—			—		—			—
Balance at March    31, 2020	$	835		$	—		$	435		$	453	$	—		$	1,723

(a) As of March 31, 2020 and September 30, 2019, there was accumulated impairment of $90 million related to the Intermediates and Solvents reportable segment.

Summary of Intangible Assets

Intangible assets were comprised of the following as of March 31, 2020 and September 30, 2019.

	March 31, 2020
	Gross					Net
	carrying		Accumulated			carrying
(In millions)	amount		amortization			amount
Definite-lived intangibles
Trademarks and trade names	$	66	$	(30	)	$	36
Intellectual property		710		(413	)		297
Customer and supplier relationships		742		(309	)		433
Total definite-lived intangibles		1,518		(752	)		766
Indefinite-lived intangibles
Trademarks and trade names		278		—			278
Total intangible assets	$	1,796	$	(752	)	$	1,044

	September 30, 2019
	Gross					Net
	carrying		Accumulated			carrying
(In millions)	amount		amortization			amount
Definite-lived intangibles
Trademarks and trade names	$	66	$	(29	)	$	37
Intellectual property		712		(391	)		321
Customer and supplier relationships		744		(292	)		452
Total definite-lived intangibles		1,522		(712	)		810
Indefinite-lived intangibles
Trademarks and trade names		278		—			278
Total intangible assets	$	1,800	$	(712	)	$	1,088