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Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Parenthetical) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021
Derivatives |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Unrealized gains (losses), tax | $ 13 | $ (3) | $ 2 | $ (6)
Net change related to other comprehensive income (loss), tax | (9) | 0 | (8) | 0
Investments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Unrealized gains (losses), tax | 89 | (197) | (421) | (307)
Net change related to other comprehensive income (loss), tax | 91 | (197) | (412) | (309)
Translation adjustments and other |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Net change related to other comprehensive income (loss), tax | $ 0 | $ 0 | $ 0 | $ 0

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