Reconciliation of Total Assets Measured at Fair Value on Recurring Basis to Balance Sheet Presentation (Detail) - USD ($)
$ in Millions |
Mar. 31, 2016 |
Jun. 30, 2015 |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Net fair value of assets measured at fair value on a recurring basis |
$ 112,294
|
$ 104,369
|
| Other assets |
16
|
4
|
| Recorded basis of investment components |
116,842
|
108,554
|
| Other Current Assets |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Less derivative net assets classified as other current assets |
(486)
|
(648)
|
| Fair Value, Measurements, Recurring |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Cash |
3,691
|
3,679
|
| Fair Value, Measurements, Nonrecurring |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Common and preferred stock measured at fair value on a nonrecurring basis |
770
|
561
|
| Other investments measured at fair value on a nonrecurring basis |
$ 557
|
$ 589
|