Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Jan. 24, 2020

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 26, 2019	$	6,854	$	20,381	$	10,821	$	1,903	$	39,959
Goodwill as a result of acquisitions	—		11		65		16		92
Purchase accounting adjustments	7		2		119		(5)		123
Currency translation and other	5		(59)		(29)		—		(83)
January 24, 2020	$	6,866	$	20,335	$	10,976	$	1,914	$	40,091

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:

	January 24, 2020				April 26, 2019
(in millions)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Definite-lived:
Customer-related	$	16,971	$	(4,824)	$	16,944	$	(4,095)
Purchased technology and patents	10,640		(4,178)		11,405		(4,570)
Trademarks and tradenames	464		(228)		570		(324)
Other	83		(54)		85		(59)
Total	$	28,158	$	(9,284)	$	29,004	$	(9,048)
Indefinite-lived:
IPR&D	$	582	$	—	$	604	$	—

Gross Carrying Amount of Indefinite-Lived Intangible Assets

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

	January 24, 2020				April 26, 2019
(in millions)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Definite-lived:
Customer-related	$	16,971	$	(4,824)	$	16,944	$	(4,095)
Purchased technology and patents	10,640		(4,178)		11,405		(4,570)
Trademarks and tradenames	464		(228)		570		(324)
Other	83		(54)		85		(59)
Total	$	28,158	$	(9,284)	$	29,004	$	(9,048)
Indefinite-lived:
IPR&D	$	582	$	—	$	604	$	—

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 January 24, 2020, 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 2020	$	437
2021	1,741
2022	1,699
2023	1,634
2024	1,605
2025	1,576