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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Business Acquisitions and Divestitures - Narrative (Details) - USD ($) $ in Millions				12 Months Ended
	Jun. 02, 2025	Apr. 01, 2025	Dec. 30, 2024	Mar. 31, 2026	Mar. 31, 2025	Jan. 30, 2026	Mar. 31, 2024
Discontinued Operations Disclosures
Goodwill				$ 11,316	$ 10,022		$ 10,132
Disposed of by Sale \| Norway Disposal Group
Discontinued Operations Disclosures
Consideration agreed upon for sale of business						$ 821
Divested assets						$ 140
Gain on remeasurement to fair value				480
Accumulated other comprehensive loss in charge for remeasurement to fair value				164
Disposed of by Sale \| Canadian Retail Disposal Group
Discontinued Operations Disclosures
Divested assets			$ 741
Gain on remeasurement to fair value					(667)
Accumulated other comprehensive loss in charge for remeasurement to fair value					48
Cash proceeds from divestiture			9
Noncash divestiture, amount of consideration received			$ 120
Noncash divestiture payable period (in years)			6 years
Trade accounts payable			$ 125
Core Ventures
Discontinued Operations Disclosures
Business acquisition, percentage of controlling interest in combined business	70.00%
Cash payment to acquire business	$ 2,481
Redeemable noncontrolling interests	700
Intangible assets	2,310
Goodwill	$ 775				806
Core Ventures \| Redeemable Noncontrolling Interests
Discontinued Operations Disclosures
Redeemable noncontrolling interests				700
Core Ventures \| FCS Physicians
Discontinued Operations Disclosures
Ownership retained (as a percent)	30.00%
Exercisable term (in years)	5 years
PRISM Vision Holdings, LLC
Discontinued Operations Disclosures
Business acquisition, percentage of controlling interest in combined business		80.00%
Cash payment to acquire business		$ 875
Redeemable noncontrolling interests		25
Intangible assets		510
Goodwill		437			$ 432
PRISM Vision Holdings, LLC \| Redeemable Noncontrolling Interests
Discontinued Operations Disclosures
Redeemable noncontrolling interests		$ 25		$ 25
PRISM Vision Holdings, LLC \| PRISM Vision Physicians
Discontinued Operations Disclosures
Ownership retained (as a percent)		20.00%