Intangible Assets (Tables)

9 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Components of Intangible Assets

Intangible assets consisted of:

	June 30, 2017				September 30, 2016
(Millions of dollars)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets
Customer relationships	$	3,375	$	508	$	3,360	$	339
Developed technology	3,484		951		3,409		754
Product rights	123		49		125		43
Trademarks	408		61		405		45
Patents and other	363		264		349		254
Amortized intangible assets	$	7,754	$	1,833	$	7,648	$	1,435
Unamortized intangible assets
Acquired in-process research and development	$	66			$	66
Trademarks	2				2
Unamortized intangible assets	$	68			$	68

Reconciliation of Goodwill by Business Segment

The following is a reconciliation of goodwill by business segment:

(Millions of dollars)	Medical			Life Sciences		Total
Goodwill as of September 30, 2016	$	6,688		$	731	$	7,419
Acquisitions (A)	97			24		121
Divestiture (B)	(25		)	—		(25		)
Currency translation	(1		)	—		(1		)
Goodwill as of June 30, 2017	$	6,758		$	755	$	7,513

(A) Represents goodwill recognized upon the Company's acquisitions made during the year. Such acquisitions were not material individually or in the aggregate.

(B) Represents goodwill derecognized upon the Company's sale of a 50.1% controlling financial interest in the Respiratory Solutions business, as further discussed in Note 10.