Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Oct. 26, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

The following table presents the changes in the carrying amount of goodwill by segment:

(in millions)	Cardiac and Vascular Group			Minimally Invasive Therapies Group			Restorative Therapies Group			Diabetes Group			Total
April 27, 2018	$	6,791		$	21,155		$	9,717		$	1,880		$	39,543
Goodwill as a result of acquisitions	—			20			40			—			60
Currency translation	(82		)	(772		)	(143		)	(1		)	(998		)
October 26, 2018	$	6,709		$	20,403		$	9,614		$	1,879		$	38,605

Gross Carrying Amount of Indefinite-Lived Intangible Assets

The following table presents the gross carrying amount and accumulated amortization of intangible assets:

	October 26, 2018					April 27, 2018
(in millions)	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Definite-lived:
Customer-related	$	16,917	$	(3,611	)	$	16,949	$	(3,139	)
Purchased technology and patents	11,553		(4,784		)	11,569		(4,441		)
Trademarks and tradenames	821		(582		)	822		(569		)
Other	89		(55		)	94		(52		)
Total	$	29,380	$	(9,032	)	$	29,434	$	(8,201	)
Indefinite-lived:
IPR&D	$	471				$	490

Gross Carrying Amount and Accumulated Amortization of Definite-Lived Intangible Assets

The following table presents the gross carrying amount and accumulated amortization of intangible assets:

	October 26, 2018					April 27, 2018
(in millions)	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Definite-lived:
Customer-related	$	16,917	$	(3,611	)	$	16,949	$	(3,139	)
Purchased technology and patents	11,553		(4,784		)	11,569		(4,441		)
Trademarks and tradenames	821		(582		)	822		(569		)
Other	89		(55		)	94		(52		)
Total	$	29,380	$	(9,032	)	$	29,434	$	(8,201	)
Indefinite-lived:
IPR&D	$	471				$	490

Estimated Future Aggregate Amortization Expense, Definite-Lived Intangible Assets

Estimated aggregate amortization expense by fiscal year based on the carrying value of definite-lived intangible assets at October 26, 2018, excluding any possible future amortization associated with acquired IPR&D which has not yet met technological feasibility, is as follows:

(in millions)	Amortization Expense
Remaining 2019	$	852
2020	1,692
2021	1,676
2022	1,636
2023	1,568
2024	1,526