Goodwill and Other Intangibles

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangibles

GOODWILL AND OTHER INTANGIBLE ASSETS

We completed our annual impairment tests of goodwill in 2018 and 2017 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
2018	13	$	3,426	$	1,115	$	2,311
2017	12	2,416		917		1,499
Customer relationships
2018	15	$	2,155	$	703	$	1,452
2017	15	2,088		561		1,527
Patents
2018	12	$	332	$	231	$	101
2017	10	340		227		113
Trademarks
2018	18	$	349	$	108	$	241
2017	18	352		84		268
In-process research and development
2018	N/A	$	6	—		$	6
2017	N/A	25		—		25
Other
2018	11	$	128	$	76	$	52
2017	9	93		48		45
Total
2018	14	$	6,396	$	2,233	$	4,163
2017	14	$	5,314	$	1,837	$	3,477

Changes in the Net Carrying Value of Goodwill by Segment
	Orthopaedics			MedSurg			Neurotechnology and Spine			Total
2016	$	2,372		$	2,934		$	1,050		$	6,356
Additions and adjustments	2			553			109			664
Foreign exchange	52			22			74			148
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

Estimated Amortization Expense
2019		2020		2021		2022		2023
$	438	$	413	$	400	$	392	$	372