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Redeemable Noncontrolling Interests and Noncontrolling Interests - Schedule of Changes in Redeemable Noncontrolling Interests and Noncontrolling Interests (Details) - USD ($) $ in Millions			12 Months Ended
	Jun. 02, 2025	Apr. 01, 2025	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance		$ (1,694)	$ (1,694)	$ (1,599)	$ (1,490)
Beginning balance, redeemable noncontrolling interests		0	0
Net income attributable to noncontrolling interests			5,099	3,481	3,160
Adjustment to redemption value in net income attributable to noncontrolling interests			0	0	0
Adjustment to redemption value in net income attributable to noncontrolling interests			122	0	0
Payments to noncontrolling interests			(182)	(178)	(152)
Other			1	(2)	3
Adjustment to fair value			(87)
Ending balance			(1,777)	(1,694)	(1,599)
Ending balance, redeemable noncontrolling interests			943	0
PRISM Vision Holdings, LLC
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Acquisition fair value		25
Core Ventures
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Acquisition fair value	$ 700
Noncontrolling Interests
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance		380	380	372	367
Net income attributable to noncontrolling interests			197	186	158
Payments to noncontrolling interests			(182)	(178)	(152)
Other			0	0	(1)
Adjustment to fair value			0	0	0
Ending balance			395	380	372
Noncontrolling Interests | PRISM Vision Holdings, LLC
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Acquisition fair value			0	0	0
Noncontrolling Interests | Core Ventures
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Acquisition fair value			0	0	$ 0
Redeemable Noncontrolling Interests
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance, redeemable noncontrolling interests		0	0
Net income attributable to noncontrolling interests			18
Payments to noncontrolling interests			(7)
Other			(2)
Adjustment to fair value			87
Ending balance, redeemable noncontrolling interests			943	$ 0
Redeemable Noncontrolling Interests | PRISM Vision Holdings, LLC
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Acquisition fair value		$ 25	25
Redeemable Noncontrolling Interests | Core Ventures
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Acquisition fair value			$ 700

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