Summary of Changes in Accumulated Other Comprehensive Income by Component (Parenthetical) (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
Mar. 31, 2016 |
Mar. 31, 2015 |
|
| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||
| Translation adjustments and other, tax effects | $ 3 | $ (174) | $ (18) | $ (432) |
| Derivatives | ||||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||
| Unrealized gains (losses), tax effects | (19) | 25 | 24 | 37 |
| Investments | ||||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||
| Unrealized gains, tax effects | 217 | 133 | 34 | 47 |
| Translation Adjustments and Other | ||||
| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||
| Translation adjustments and other, tax effects | $ 3 | $ (174) | $ (18) | $ (432) |