Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Finite-Lived Intangible Assets [Line Items]

Schedule of Intangible Assets and Goodwill [Table Text Block]

	As of December 31, 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	$	10,197	$	(5,266	)	$	9,386	$	(4,880	)
Patents	520		(393		)	517		(379		)
Other intangible assets	1,666		(958		)	1,633		(838		)
	$	12,383	$	(6,617	)	$	11,536	$	(6,097	)
Indefinite-lived intangible assets
Goodwill	$	17,811	$	(9,900	)	$	16,898	$	(9,900	)
IPR&D	486		—			278		—
Technology-related	120		—			120		—
	$	18,417	$	(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, 2016	$	2,875		$	290		$	3,513		$	6,678
Impact of foreign currency fluctuations and other changes in carry amount	2			1			9			12
Goodwill acquired	—			126			182			308
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 carry amount	(3		)	(22		)	(3		)	(29		)
Goodwill acquired	568			150			224			942
Balance as of December 31, 2018	$	2,063		$	1,924		$	3,925		$	7,911

Schedule of Expected Amortization Expense [Table Text Block]

Estimated Amortization expense for each of the five succeeding fiscal years based upon our amortizable intangible asset portfolio as of December 31, 2018 is as follows (in millions):

Fiscal Year
2019	$	639
2020	635
2021	599
2022	571
2023	551