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Investment Components (Detail) - USD ($) $ in Millions | Dec. 31, 2021 | Jun. 30, 2021
--- | --- | ---
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | $ 115,397 |
Debt investments, Recorded Basis |  | 117,964 |
Derivative, net |  | 296 | $ 258
Cash and cash equivalents |  | 20,604 | 14,224
Short-term Investments |  | 104,765 | 116,110
Equity Investments |  | 6,994 | 5,984
Cash, cash equivalents, and investments |  | 132,363 | 136,318
Equity investments |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Equity investments, Recorded Basis |  | 8,123 | 6,960
Cash and cash equivalents |  | 1,129 | 976
Short-term Investments |  | 0 | 0
Equity Investments |  | 6,994 | 5,984
Equity investments | Other |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Equity investments, Recorded Basis |  | 6,141 | 5,378
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 0 | 0
Equity Investments |  | 6,141 | 5,378
Equity investments | Level 1 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Equity investments, Recorded Basis |  | 1,982 | 1,582
Cash and cash equivalents |  | 1,129 | 976
Short-term Investments |  | 0 | 0
Equity Investments |  | 853 | 606
Cash |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Cash |  | 6,255 | 7,272
Cash and cash equivalents |  | 6,255 | 7,272
Short-term Investments |  | 0 | 0
Equity Investments |  | 0 | 0
Derivatives, net |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Derivative, net | [1] | 21 | 78
Cash and cash equivalents | [1] | 0 | 0
Short-term Investments | [1] | 21 | 78
Equity Investments | [1] | 0 | 0
Debt investments |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 115,397 | 117,966
Debt investments, Unrealized Gains |  | 2,768 | 4,177
Debt investments, Unrealized Losses |  | (201) | (135)
Debt investments, Recorded Basis |  | 117,964 | 122,008
Cash and cash equivalents |  | 13,220 | 5,976
Short-term Investments |  | 104,744 | 116,032
Equity Investments |  | 0 | 0
Debt investments | Commercial Paper | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 7,464 | 4,316
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 7,464 | 4,316
Cash and cash equivalents |  | 7,233 | 1,331
Short-term Investments |  | 231 | 2,985
Equity Investments |  | 0 | 0
Debt investments | Certificates of deposit | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 4,179 | 3,615
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 4,179 | 3,615
Cash and cash equivalents |  | 3,938 | 2,920
Short-term Investments |  | 241 | 695
Equity Investments |  | 0 | 0
Debt investments | U.S. government securities | Level 1 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 89,746 | 90,664
Debt investments, Unrealized Gains |  | 2,552 | 3,832
Debt investments, Unrealized Losses |  | (136) | (111)
Debt investments, Recorded Basis |  | 92,162 | 94,385
Cash and cash equivalents |  | 850 | 1,500
Short-term Investments |  | 91,312 | 92,885
Equity Investments |  | 0 | 0
Debt investments | U.S. agency securities | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 2,007 | 807
Debt investments, Unrealized Gains |  | 0 | 2
Debt investments, Unrealized Losses |  | (1) | 0
Debt investments, Recorded Basis |  | 2,006 | 809
Cash and cash equivalents |  | 1,199 | 0
Short-term Investments |  | 807 | 809
Equity Investments |  | 0 | 0
Debt investments | Foreign government bonds | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 198 | 6,213
Debt investments, Unrealized Gains |  | 4 | 9
Debt investments, Unrealized Losses |  | (4) | (2)
Debt investments, Recorded Basis |  | 198 | 6,220
Cash and cash equivalents |  | 0 | 225
Short-term Investments |  | 198 | 5,995
Equity Investments |  | 0 | 0
Debt investments | Mortgage- and asset-backed securities | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 3,089 | 3,442
Debt investments, Unrealized Gains |  | 11 | 22
Debt investments, Unrealized Losses |  | (15) | (6)
Debt investments, Recorded Basis |  | 3,085 | 3,458
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 3,085 | 3,458
Equity Investments |  | 0 | 0
Debt investments | Corporate notes and bonds | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 8,261 | 8,443
Debt investments, Unrealized Gains |  | 144 | 249
Debt investments, Unrealized Losses |  | (38) | (9)
Debt investments, Recorded Basis |  | 8,367 | 8,683
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 8,367 | 8,683
Equity Investments |  | 0 | 0
Debt investments | Corporate notes and bonds | Level 3 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 46 | 63
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 46 | 63
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 46 | 63
Equity Investments |  | 0 | 0
Debt investments | Municipal securities | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 304 | 308
Debt investments, Unrealized Gains |  | 57 | 63
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 361 | 371
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 361 | 371
Equity Investments |  | 0 | 0
Debt investments | Municipal securities | Level 3 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 103 | 95
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | (7) | (7)
Debt investments, Recorded Basis |  | 96 | 88
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 96 | 88
Equity Investments |  | $ 0 | $ 0
[1] | Refer to Note 5 – Derivatives for further information on the fair value of our derivative instruments.

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