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Goodwill and Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of the Company's Other Intangible Assets



Summary of Other Intangible Assets
	Weighted Average Amortization Period (Years)	Gross Carrying Amount			Less Accumulated Amortization			Net Carrying Amount
Developed technologies
2017	12	$	2,416		$	917		$	1,499
2016	14	2,091			706			1,385
Customer relationships
2017	15	$	2,088		$	561		$	1,527
2016	15	2,049			407			1,642
Patents
2017	10	$	340		$	227		$	113
2016	11	317			206			111
Trademarks
2017	18	$	352		$	84		$	268
2016	18	348			59			289
In-process research and development
2017	N/A	$	25		—			$	25
2016	N/A	30			—			30
Other
2017	9	$	93		$	48		$	45
2016	12	115			64			51
Total
2017	14	$	5,314		$	1,837		$	3,477
2016	15	$	4,950		$	1,442		$	3,508

Changes in the Net Carrying Amount of Goodwill by Segment



Changes in the Net Carrying Value of Goodwill by Segment
	Orthopaedics			MedSurg			Neurotechnology and Spine			Total
2015	$	2,344		$	782		$	1,010		$	4,136
Additions and adjustments	72			2,196			62			2,330
Foreign exchange	(44		)	(44		)	(22		)	(110		)
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

Estimated Amortization Expense



Estimated Amortization Expense
2018			2019			2020			2021			2022
$	368		$	355		$	330		$	318		$	311