Long-Lived Assets, Excluding Financial Instruments and Tax Assets, Classified by Location of Controlling Statutory Company (Detail) - USD ($) $ in Millions |
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2016 |
|---|---|---|---|
| Certain Long-Lived Assets by Geography [Line Items] | |||
| Long-lived assets | $ 79,882 | $ 75,517 | $ 45,159 |
| United States | |||
| Certain Long-Lived Assets by Geography [Line Items] | |||
| Long-lived assets | 44,501 | 42,730 | 25,145 |
| Ireland | |||
| Certain Long-Lived Assets by Geography [Line Items] | |||
| Long-lived assets | 12,843 | 12,889 | 2,099 |
| Luxembourg | |||
| Certain Long-Lived Assets by Geography [Line Items] | |||
| Long-lived assets | 6,856 | 6,854 | 6,868 |
| Other Countries | |||
| Certain Long-Lived Assets by Geography [Line Items] | |||
| Long-lived assets | $ 15,682 | $ 13,044 | $ 11,047 |