Investment Components (Detail) - USD ($) $ in Millions		Mar. 31, 2023	Jun. 30, 2022
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		$ 98,700
Debt investments, Recorded Basis		94,931
Derivative, net		255	$ 226
Cash and cash equivalents		26,562	13,931
Short-term Investments		77,865	90,826
Equity Investments		9,415	6,891
Cash, cash equivalents, and investments		113,842	111,648
Equity investments
Cash Cash Equivalents And Investments [Line Items]
Equity investments, Recorded Basis		10,394	8,025
Cash and cash equivalents		979	1,134
Short-term Investments		0	0
Equity Investments		9,415	6,891
Equity investments | Other
Cash Cash Equivalents And Investments [Line Items]
Equity investments, Recorded Basis		6,919	6,435
Cash and cash equivalents		0	0
Short-term Investments		0	0
Equity Investments		6,919	6,435
Equity investments | Level 1
Cash Cash Equivalents And Investments [Line Items]
Equity investments, Recorded Basis		3,475	1,590
Cash and cash equivalents		979	1,134
Short-term Investments		0	0
Equity Investments		2,496	456
Cash
Cash Cash Equivalents And Investments [Line Items]
Cash		8,509	8,258
Cash and cash equivalents		8,509	8,258
Short-term Investments		0	0
Equity Investments		0	0
Derivatives, net
Cash Cash Equivalents And Investments [Line Items]
Derivative, net	[1]	8	8
Cash and cash equivalents	[1]	0	0
Short-term Investments	[1]	8	8
Equity Investments	[1]	0	0
Debt Securities
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		98,700	98,118
Debt investments, Unrealized Gains		35	53
Debt investments, Unrealized Losses		(3,804)	(2,814)
Debt investments, Recorded Basis		94,931	95,357
Cash and cash equivalents		17,074	4,539
Short-term Investments		77,857	90,818
Equity Investments		0	0
Debt Securities | Commercial Paper | Level 2
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		9,853	2,500
Debt investments, Unrealized Gains		0	0
Debt investments, Unrealized Losses		0	0
Debt investments, Recorded Basis		9,853	2,500
Cash and cash equivalents		9,207	2,498
Short-term Investments		646	2
Equity Investments		0	0
Debt Securities | Certificates of deposit | Level 2
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		2,229	2,071
Debt investments, Unrealized Gains		0	0
Debt investments, Unrealized Losses		0	0
Debt investments, Recorded Basis		2,229	2,071
Cash and cash equivalents		2,185	2,032
Short-term Investments		44	39
Equity Investments		0	0
Debt Securities | U.S. government securities | Level 1
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		66,318	79,696
Debt investments, Unrealized Gains		1	29
Debt investments, Unrealized Losses		(3,169)	(2,178)
Debt investments, Recorded Basis		63,150	77,547
Cash and cash equivalents		1,550	9
Short-term Investments		61,600	77,538
Equity Investments		0	0
Debt Securities | U.S. agency securities | Level 2
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		7,469	419
Debt investments, Unrealized Gains		1	0
Debt investments, Unrealized Losses		(2)	(9)
Debt investments, Recorded Basis		7,468	410
Cash and cash equivalents		4,127	0
Short-term Investments		3,341	410
Equity Investments		0	0
Debt Securities | Foreign government bonds | Level 2
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		512	506
Debt investments, Unrealized Gains		1	0
Debt investments, Unrealized Losses		(23)	(24)
Debt investments, Recorded Basis		490	482
Cash and cash equivalents		5	0
Short-term Investments		485	482
Equity Investments		0	0
Debt Securities | Mortgage- and asset-backed securities | Level 2
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		767	727
Debt investments, Unrealized Gains		1	1
Debt investments, Unrealized Losses		(36)	(30)
Debt investments, Recorded Basis		732	698
Cash and cash equivalents		0	0
Short-term Investments			698
Equity Investments		0	0
Debt Securities | Corporate notes and bonds | Level 2
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		10,963	11,661
Debt investments, Unrealized Gains		18	4
Debt investments, Unrealized Losses		(552)	(554)
Debt investments, Recorded Basis		10,429	11,111
Cash and cash equivalents		0	0
Short-term Investments		10,429	11,111
Equity Investments		0	0
Debt Securities | Corporate notes and bonds | Level 3
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		118	67
Debt investments, Unrealized Gains		0	0
Debt investments, Unrealized Losses		0	0
Debt investments, Recorded Basis		118	67
Cash and cash equivalents		0	0
Short-term Investments		118	67
Equity Investments		0	0
Debt Securities | Municipal securities | Level 2
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		367	368
Debt investments, Unrealized Gains		13	19
Debt investments, Unrealized Losses		(15)	(13)
Debt investments, Recorded Basis		365	374
Cash and cash equivalents		0	0
Short-term Investments		365	374
Equity Investments		0	0
Debt Securities | Municipal securities | Level 3
Cash Cash Equivalents And Investments [Line Items]
Debt investments, Adjusted Cost Basis		104	103
Debt investments, Unrealized Gains		0	0
Debt investments, Unrealized Losses		(7)	(6)
Debt investments, Recorded Basis		97	97
Cash and cash equivalents		0	0
Short-term Investments		97	97
Equity Investments		$ 0	$ 0

[1] Refer to Note 5 – Derivatives for further information on the fair value of our derivative instruments.