Intangible Assets (Tables)

3 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Components of Intangible Assets

Intangible assets consisted of:

	December 31, 2019				September 30, 2019
(Millions of dollars)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets
Developed technology	$	14,010	$	3,161	$	13,960	$	2,906
Customer relationships	4,610		1,265		4,608		1,183
Product rights	115		65		110		60
Trademarks	407		106		407		102
Patents and other	488		311		445		305
Amortized intangible assets	$	19,630	$	4,908	$	19,530	$	4,555
Unamortized intangible assets
Acquired in-process research and development	$	1			$	1
Trademarks	2				2
Unamortized intangible assets	$	3			$	3

Reconciliation of Goodwill by Business Segment

The following is a reconciliation of goodwill by business segment:

(Millions of dollars)	Medical		Life Sciences		Interventional		Total
Goodwill as of September 30, 2019	$	9,989	$	772	$	12,615	$	23,376
Acquisitions (a)	10		—		—		10
Currency translation	17		2		30		49
Goodwill as of December 31, 2019	$	10,016	$	774	$	12,645	$	23,435

(a)

Represents goodwill recognized relative to certain acquisitions which were not material individually or in the aggregate.