Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets

Goodwill

(Millions)	Safety and Industrial		Transportation and Electronics		Health Care		Consumer		Total Company
Balance as of December 31, 2020	$	4,687	$	1,858	$	6,992	$	265	$	13,802
Translation and other		(29)		(14)		(98)		(7)		(148)
Balance as of March 31, 2021	$	4,658	$	1,844	$	6,894	$	258	$	13,654

Acquired Intangible Assets

	March 31,		December 31,
(Millions)	2021		2020
Customer related intangible assets	$	4,266	$	4,280
Patents		517		537
Other technology-based intangible assets		2,113		2,114
Definite-lived tradenames		1,172		1,178
Other amortizable intangible assets		104		104
Total gross carrying amount	$	8,172	$	8,213
Accumulated amortization — customer related		(1,473)		(1,422)
Accumulated amortization — patents		(495)		(512)
Accumulated amortization — other technology-based		(687)		(638)
Accumulated amortization — definite-lived tradenames		(397)		(385)
Accumulated amortization — other		(78)		(79)
Total accumulated amortization	$	(3,130)	$	(3,036)
Total finite-lived intangible assets — net	$	5,042	$	5,177
Non-amortizable intangible assets (primarily tradenames)		655		658
Total intangible assets — net	$	5,697	$	5,835

Schedule of amortization expense for acquired intangible assets

Amortization expense for the three months ended March 31, 2021 and 2020 follows:

	Three months ended
	March 31,
(Millions)	2021		2020
Amortization expense	$	133	$	134

Schedule of expected amortization expense for acquired amortizable intangible assets

Expected amortization expense for acquired amortizable intangible assets recorded as of March 31, 2021:

	Remainder of												After
(Millions)	2021		2022		2023		2024		2025		2026		2026
Amortization expense	$	395	$	514	$	488	$	458	$	428	$	421	$	2,338