Goodwill and Other Intangibles

12 Months Ended

Dec. 31, 2019

GOODWILL AND OTHER INTANGIBLE ASSETS

We completed our annual impairment tests of goodwill in 2019 and 2018 and concluded in each year that no impairments exist.



Summary of Other Intangible Assets
	Weighted Average Amortization Period (Years)	Gross Carrying Amount		Less Accumulated Amortization		Net Carrying Amount
Developed technologies
2019	14	$	3,731	$	1,271	$	2,460
2018	13	3,426		1,115		2,311
Customer relationships
2019	16	$	2,160	$	848	$	1,312
2018	15	2,155		703		1,452
Patents
2019	11	$	348	$	265	$	83
2018	12	332		231		101
Trademarks
2019	18	$	362	$	136	$	226
2018	18	349		108		241
In-process research and development
2019	N/A	$	110	—		$	110
2018	N/A	6		—		6
Other
2019	8	$	125	$	89	$	36
2018	11	128		76		52
Total
2019	14	$	6,836	$	2,609	$	4,227
2018	14	$	6,396	$	2,233	$	4,163



Changes in the Net Carrying Value of Goodwill by Segment
	Orthopaedics			MedSurg			Neurotechnology and Spine			Total
2017	$	2,426		$	3,509		$	1,233		$	7,168
Additions and adjustments	4			100			1,366			1,470
Foreign exchange	(31		)	(28		)	(16		)	(75		)
2018	$	2,399		$	3,581		$	2,583		$	8,563
Additions and adjustments	—			229			318			547
Foreign exchange	(13		)	(11		)	(17		)	(41		)
2019	$	2,386		$	3,799		$	2,884		$	9,069



Estimated Amortization Expense
2020		2021		2022		2023		2024
$	457	$	440	$	435	$	414	$	384