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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, 2021 | Dec. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Derivatives |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Unrealized gains (losses), tax | $ (3) | $ 7 | $ (6) | $ 12
Net change related to other comprehensive income (loss), tax | 0 | 3 | 0 | 4
Investments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Unrealized gains (losses), tax | (197) | (128) | (307) | (178)
Net change related to other comprehensive income (loss), tax | (197) | (132) | (309) | (186)
Translation adjustments and other |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Net change related to other comprehensive income (loss), tax | $ 0 | $ 0 | $ 0 | $ (9)

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