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Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Mar. 31, 2026 | Mar. 31, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, beginning of period |  |  | $ 343,479 |
Other comprehensive income (loss) | $ (526) | $ 783 | 119 | $ 757
Balance, end of period | 414,367 | 321,891 | 414,367 | 321,891
Derivatives |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, beginning of period | (14) | 21 | (8) | (3)
Unrealized gains (losses), net of tax | (27) | 20 | (43) | (1)
Tax expense (benefit) included in provision for income taxes | (7) | 10 | (9) | (2)
Amounts reclassified from accumulated other comprehensive loss | 27 | (40) | 37 | 5
Other comprehensive income (loss) | 0 | (20) | (6) | 4
Balance, end of period | (14) | 1 | (14) | 1
Derivatives | Other Income (Expense), Net |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Reclassification adjustments for (gains) losses included in other income (expense), net | 34 | (50) | 46 | 7
Investments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, beginning of period | (525) | (1,945) | (1,051) | (2,625)
Unrealized gains (losses), net of tax | (215) | 445 | 310 | 1,110
Tax expense (benefit) included in provision for income taxes | 6 | (1) | 6 | (5)
Amounts reclassified from accumulated other comprehensive loss | (24) | 5 | (23) | 20
Other comprehensive income (loss) | (239) | 450 | 287 | 1,130
Balance, end of period | (764) | (1,495) | (764) | (1,495)
Investments | Other Income (Expense), Net |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Reclassification adjustments for (gains) losses included in other income (expense), net | (30) | 6 | (29) | 25
Translation adjustments and other |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, beginning of period | (2,163) | (3,692) | (2,288) | (2,962)
Other comprehensive income (loss) | (287) | 353 | (162) | (377)
Balance, end of period | (2,450) | (3,339) | (2,450) | (3,339)
Accumulated other comprehensive loss |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance, beginning of period | (2,702) | (5,616) | (3,347) | (5,590)
Other comprehensive income (loss) | (526) | 783 | 119 | 757
Balance, end of period | $ (3,228) | $ (4,833) | $ (3,228) | $ (4,833)

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