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Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Parenthetical) (Detail) - USD ($) $ in Millions | 3 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Derivatives |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Unrealized gains (losses), tax | $ 5 | $ (2)
Net change related to other comprehensive income (loss), tax | 1 | (1)
Investments |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Unrealized gains (losses), tax | (50) | 156
Net change related to other comprehensive income (loss), tax | (54) | 156
Translation adjustments and other |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Net change related to other comprehensive income (loss), tax | $ (9) | $ (8)

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