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Investment Components (Detail) - USD ($) $ in Millions | Mar. 31, 2024 | Jun. 30, 2023
--- | --- | ---
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | $ 73,113 |
Debt investments, Recorded Basis |  | 69,674 |
Derivative, net |  | 117 | $ 267
Cash and cash equivalents |  | 19,634 | 34,704
Short-term Investments |  | 60,387 | 76,558
Equity and other investments |  | 14,807 | 9,879
Cash, cash equivalents, and investments |  | 94,828 | 121,141
Equity Securities |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Equity investments, Recorded Basis |  | 13,565 | 17,325
Cash and cash equivalents |  | 258 | 7,446
Short-term Investments |  | 0 | 0
Equity and other investments |  | 13,307 | 9,879
Equity Securities | Other |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Equity investments, Recorded Basis |  | 10,225 | 7,187
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 0 | 0
Equity and other investments |  | 10,225 | 7,187
Equity Securities | Level 1 |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Equity investments, Recorded Basis |  | 3,340 | 10,138
Cash and cash equivalents |  | 258 | 7,446
Short-term Investments |  | 0 | 0
Equity and other investments |  | 3,082 | 2,692
Cash |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Cash |  | 11,581 | 8,478
Cash and cash equivalents |  | 11,581 | 8,478
Short-term Investments |  | 0 | 0
Equity and other investments |  | 0 | 0
Derivatives, net |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Derivative, net | [1] | 8 | 6
Cash and cash equivalents | [1] | 0 | 0
Short-term Investments | [1] | 8 | 6
Equity and other investments | [1] | 0 | 0
Debt Securities |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 73,113 | 99,869
Debt investments, Unrealized Gains |  | 52 | 13
Debt investments, Unrealized Losses |  | (3,491) | (4,550)
Debt investments, Recorded Basis |  | 69,674 | 95,332
Cash and cash equivalents |  | 7,795 | 18,780
Short-term Investments |  | 60,379 | 76,552
Equity and other investments |  | 1,500 | 0
Debt Securities | Commercial Paper | Level 2 |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 5,535 | 16,589
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 5,535 | 16,589
Cash and cash equivalents |  | 5,535 | 12,231
Short-term Investments |  | 0 | 4,358
Equity and other investments |  | 0 | 0
Debt Securities | Certificates of deposit | Level 2 |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 2,300 | 2,701
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 2,300 | 2,701
Cash and cash equivalents |  | 2,256 | 2,657
Short-term Investments |  | 44 | 44
Equity and other investments |  | 0 | 0
Debt Securities | U.S. government securities | Level 1 |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 52,036 | 65,237
Debt investments, Unrealized Gains |  | 3 | 2
Debt investments, Unrealized Losses |  | (3,074) | (3,870)
Debt investments, Recorded Basis |  | 48,965 | 61,369
Cash and cash equivalents |  | 4 | 2,991
Short-term Investments |  | 48,961 | 58,378
Equity and other investments |  | 0 | 0
Debt Securities | U.S. agency securities | Level 2 |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 23 | 2,703
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 23 | 2,703
Cash and cash equivalents |  | 0 | 894
Short-term Investments |  | 23 | 1,809
Equity and other investments |  | 0 | 0
Debt Securities | Foreign government bonds | Level 2 |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 352 | 498
Debt investments, Unrealized Gains |  | 4 | 1
Debt investments, Unrealized Losses |  | (12) | (24)
Debt investments, Recorded Basis |  | 344 | 475
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 344 | 475
Equity and other investments |  | 0 | 0
Debt Securities | Mortgage- and asset-backed securities | Level 2 |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 980 | 824
Debt investments, Unrealized Gains |  | 4 | 1
Debt investments, Unrealized Losses |  | (34) | (39)
Debt investments, Recorded Basis |  | 950 | 786
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 950 | 786
Equity and other investments |  | 0 | 0
Debt Securities | Corporate notes and bonds | Level 2 |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 9,874 | 10,809
Debt investments, Unrealized Gains |  | 40 | 8
Debt investments, Unrealized Losses |  | (340) | (583)
Debt investments, Recorded Basis |  | 9,574 | 10,234
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 9,574 | 10,234
Equity and other investments |  | 0 | 0
Debt Securities | Corporate notes and bonds | Level 3 |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 1,646 | 120
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | (1) | 0
Debt investments, Recorded Basis |  | 1,645 | 120
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 145 | 120
Equity and other investments |  | 1,500 | 0
Debt Securities | Municipal securities | Level 2 |  |  |
Cash Cash Equivalents And Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 263 | 285
Debt investments, Unrealized Gains |  | 1 | 1
Debt investments, Unrealized Losses |  | (14) | (18)
Debt investments, Recorded Basis |  | 250 | 268
Cash and cash equivalents |  | 0 | 7
Short-term Investments |  | 250 | 261
Equity and other 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 |  | (16) | (16)
Debt investments, Recorded Basis |  | 88 | 87
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 88 | 87
Equity and other investments |  | $ 0 | $ 0
[1] | Refer to Note 5 – Derivatives for further information on the fair value of our derivative instruments.

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