Goodwill and Other Intangible Assets Goodwill (Tables)

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

The gross carrying amount of goodwill and other intangible assets and the related accumulated amortization for intangible assets subject to amortization and accumulated write-offs of goodwill are as follows:

	As of September 30, 2018					As of December 31, 2017
(in millions)	Gross Carrying Amount		Accumulated Amortization/ Write-offs			Gross Carrying Amount		Accumulated Amortization/ Write-offs
Amortizable intangible assets
Technology-related	$	9,989	$	(5,145	)	$	9,386	$	(4,880	)
Patents	517		(388		)	517		(379		)
Other intangible assets	1,645		(927		)	1,633		(838		)
	$	12,151	$	(6,460	)	$	11,536	$	(6,097	)
Indefinite-lived intangible assets
Goodwill	$	17,488	$	(9,900	)	$	16,898	$	(9,900	)
IPR&D	486		—			278		—
Technology-related	120		—			120		—
	$	18,094	$	(9,900	)	$	17,295	$	(9,900	)

Schedule of Goodwill [Table Text Block]

The following represents our goodwill balance by global reportable segment:

(in millions)	MedSurg			Rhythm and Neuro			Cardiovascular			Total
Balance as of December 31, 2017	$	2,877		$	417		$	3,704		$	6,998
Impact of reportable segment revisions	(1,379		)	1,379			—			—
Impact of foreign currency fluctuations and other changes in carrying amount	(3		)	(22		)	(4		)	(29		)
Goodwill acquired	246			149			224			619
Balance as of September 30, 2018	$	1,742		$	1,922		$	3,923		$	7,588