Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Income Taxes [Line Items]
Provision (benefit) for income taxes			$ 10,978	$ 9,831	$ 8,755
Income taxes paid, net of refunds			16,000	13,400	12,500
Gross unrecognized tax benefits related to uncertain tax positions			15,593	14,550	13,792	$ 13,146
Gross unrecognized tax benefits related to uncertain tax positions, if recognized would affect our effective tax rates			13,300	12,500	12,100
Accrued interest expense related to uncertain tax positions net of federal income tax benefits			4,300	4,300	4,000
Interest expense related to uncertain tax positions, net of income tax benefits			$ 36	$ 274	$ 579
Regional Operating Centers
Income Taxes [Line Items]
Foreign earnings, taxed at rates lower than U.S. rate as a percentage of foreign income before tax			71.00%	82.00%	86.00%
Federal
Income Taxes [Line Items]
Operating loss carryforwards			$ 318
Capital loss carryforwards			1,300
State
Income Taxes [Line Items]
Operating loss carryforwards			1,300
Foreign Country
Income Taxes [Line Items]
Operating loss carryforwards			$ 2,100
Transfer of Intangible Properties
Income Taxes [Line Items]
Provision (benefit) for income taxes	$ (3,300)
Earliest Tax Year
Income Taxes [Line Items]
Tax years impacted		1996
Earliest Tax Year | Federal
Income Taxes [Line Items]
Capital loss carryforwards expiration year			2023
Earliest Tax Year | Federal and State
Income Taxes [Line Items]
Operating loss carryforwards expiration year			2023
Latest Tax Year
Income Taxes [Line Items]
Tax years impacted		2016
Latest Tax Year | Federal
Income Taxes [Line Items]
Capital loss carryforwards expiration year			2025
Latest Tax Year | Federal and State
Income Taxes [Line Items]
Operating loss carryforwards expiration year			2042
India Supreme Court
Income Taxes [Line Items]
Provision (benefit) for income taxes		$ (620)