Accounting Policies - Additional Information (Detail) $ / shares in Units, $ in Millions			3 Months Ended			9 Months Ended		12 Months Ended
	Jan. 18, 2023 Job	Jul. 01, 2022	Mar. 31, 2023 USD ($) $ / shares	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($) $ / shares	Mar. 31, 2023 USD ($) $ / shares	Mar. 31, 2022 USD ($) $ / shares	Jun. 30, 2022 USD ($)
Significant Accounting Policies [Line Items]
Operating income			$ 22,352		$ 20,364	$ 64,269	$ 62,849
Net income			$ 18,299		$ 16,728	$ 52,280	$ 55,998
Income per basic share | $ / shares			$ 2.46		$ 2.23	$ 7.02	$ 7.46
Income per diluted share | $ / shares			$ 2.45		$ 2.22	$ 6.99	$ 7.41
Other receivables due from suppliers			$ 717			$ 717		$ 1,000
Long-term accounts receivable, net of allowance for doubtful accounts			4,300			4,300		3,800
Financing receivables, net			2,700			2,700		$ 4,100
Employee severance expenses				$ 800
Estimated reduction in workforce | Job	10,000
Service Life
Significant Accounting Policies [Line Items]
Operating income			885			2,900
Net income			$ 720			$ 2,300
Income per basic share | $ / shares			$ 0.10			$ 0.32
Income per diluted share | $ / shares			$ 0.10			$ 0.31
Server Equipment | Service Life
Significant Accounting Policies [Line Items]
Estimated useful lives		6 years						4 years
Network Equipment | Service Life
Significant Accounting Policies [Line Items]
Estimated useful lives		6 years						4 years