Long-Lived Assets, Excluding Financial Instruments and Tax Assets, Classified by Location of Controlling Statutory Company (Detail) - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Certain Long-Lived Assets by Geography [Line Items]
Long-lived assets	$ 68,962	$ 39,961	$ 36,505
United States
Certain Long-Lived Assets by Geography [Line Items]
Long-lived assets	39,118	22,819	19,562
Ireland
Certain Long-Lived Assets by Geography [Line Items]
Long-lived assets	12,876	2,078	1,595
Luxembourg
Certain Long-Lived Assets by Geography [Line Items]
Long-lived assets	6,845	6,854	6,879
Other Countries
Certain Long-Lived Assets by Geography [Line Items]
Long-lived assets	$ 10,123	$ 8,210	$ 8,469