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Investment Components (Detail) - USD ($) $ in Millions | Jun. 30, 2021 | Jun. 30, 2020
--- | --- | ---
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | $ 117,966 |
Debt investments, Recorded Basis |  | 122,008 |
Derivative, net |  | 258 | $ 246
Cash and cash equivalents |  | 14,224 | 13,576
Short-term Investments |  | 116,110 | 122,951
Equity Investments |  | 5,984 | 2,965
Cash, cash equivalents, and investments |  | 136,318 | 139,492
Equity investments |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Equity investments, Recorded Basis |  | 6,960 | 3,749
Cash and cash equivalents |  | 976 | 784
Short-term Investments |  | 0 | 0
Equity Investments |  | 5,984 | 2,965
Equity investments | Other |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Equity investments, Recorded Basis |  | 5,378 | 2,551
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 0 | 0
Equity Investments |  | 5,378 | 2,551
Equity investments | Level 1 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Equity investments, Recorded Basis |  | 1,582 | 1,198
Cash and cash equivalents |  | 976 | 784
Short-term Investments |  | 0 | 0
Equity Investments |  | 606 | 414
Cash |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Cash |  | 7,272 | 5,910
Cash and cash equivalents |  | 7,272 | 5,910
Short-term Investments |  | 0 | 0
Equity Investments |  | 0 | 0
Derivatives, net |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Derivative, net | [1] | 78 | 35
Cash and cash equivalents | [1] | 0 | 0
Short-term Investments | [1] | 78 | 35
Equity Investments | [1] | 0 | 0
Debt investments |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 117,966 | 122,900
Debt investments, Unrealized Gains |  | 4,177 | 6,929
Debt investments, Unrealized Losses |  | (135) | (31)
Debt investments, Recorded Basis |  | 122,008 | 129,798
Cash and cash equivalents |  | 5,976 | 6,882
Short-term Investments |  | 116,032 | 122,916
Equity Investments |  | 0 | 0
Debt investments | Commercial Paper | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 4,316 | 4,687
Debt investments, Unrealized Gains |  | 0 | 1
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 4,316 | 4,688
Cash and cash equivalents |  | 1,331 | 1,618
Short-term Investments |  | 2,985 | 3,070
Equity Investments |  | 0 | 0
Debt investments | Certificates of deposit | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 3,615 | 2,898
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 3,615 | 2,898
Cash and cash equivalents |  | 2,920 | 1,646
Short-term Investments |  | 695 | 1,252
Equity Investments |  | 0 | 0
Debt investments | U.S. government securities | Level 1 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 90,664 | 92,067
Debt investments, Unrealized Gains |  | 3,832 | 6,495
Debt investments, Unrealized Losses |  | (111) | (1)
Debt investments, Recorded Basis |  | 94,385 | 98,561
Cash and cash equivalents |  | 1,500 | 3,168
Short-term Investments |  | 92,885 | 95,393
Equity Investments |  | 0 | 0
Debt investments | U.S. agency securities | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 807 | 2,439
Debt investments, Unrealized Gains |  | 2 | 2
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 809 | 2,441
Cash and cash equivalents |  | 0 | 449
Short-term Investments |  | 809 | 1,992
Equity Investments |  | 0 | 0
Debt investments | Foreign government bonds | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 6,213 | 6,982
Debt investments, Unrealized Gains |  | 9 | 6
Debt investments, Unrealized Losses |  | (2) | (3)
Debt investments, Recorded Basis |  | 6,220 | 6,985
Cash and cash equivalents |  | 225 | 1
Short-term Investments |  | 5,995 | 6,984
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 |  | 3,442 | 4,865
Debt investments, Unrealized Gains |  | 22 | 41
Debt investments, Unrealized Losses |  | (6) | (6)
Debt investments, Recorded Basis |  | 3,458 | 4,900
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 3,458 | 4,900
Equity Investments |  | 0 | 0
Debt investments | Corporate notes and bonds | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 8,443 | 8,500
Debt investments, Unrealized Gains |  | 249 | 327
Debt investments, Unrealized Losses |  | (9) | (17)
Debt investments, Recorded Basis |  | 8,683 | 8,810
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 8,683 | 8,810
Equity Investments |  | 0 | 0
Debt investments | Corporate notes and bonds | Level 3 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 63 | 58
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | 0 | 0
Debt investments, Recorded Basis |  | 63 | 58
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 63 | 58
Equity Investments |  | 0 | 0
Debt investments | Municipal securities | Level 2 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 308 | 313
Debt investments, Unrealized Gains |  | 63 | 57
Debt investments, Unrealized Losses |  | 0 | (4)
Debt investments, Recorded Basis |  | 371 | 366
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 371 | 366
Equity Investments |  | 0 | 0
Debt investments | Municipal securities | Level 3 |  |  |
Cash, Cash Equivalents and Investments [Line Items] |  |  |
Debt investments, Adjusted Cost Basis |  | 95 | 91
Debt investments, Unrealized Gains |  | 0 | 0
Debt investments, Unrealized Losses |  | (7) | 0
Debt investments, Recorded Basis |  | 88 | 91
Cash and cash equivalents |  | 0 | 0
Short-term Investments |  | 88 | 91
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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