Debt - Additional Information (Detail) - USD ($)
|
9 Months Ended |
12 Months Ended |
Mar. 31, 2016 |
Jun. 30, 2015 |
| Debt Instrument [Line Items] |
|
|
| Commercial paper |
$ 5,500,000,000
|
$ 5,000,000,000
|
| Credit facility, financial covenant |
As of March 31, 2016, we were in compliance with the only financial covenant in both credit agreements, which requires us to maintain a coverage ratio of at least three times earnings before interest, taxes, depreciation, and amortization to interest expense, as defined in the credit agreements.
|
|
| Credit facility, drawn |
$ 0
|
0
|
| Long-term debt |
40,900,000,000
|
30,300,000,000
|
| Long-term debt fair value |
43,500,000,000
|
30,500,000,000
|
| Unamortized discount |
169,000,000
|
$ 156,000,000
|
| Credit Facility Expire on November 1st 2016 |
|
|
| Debt Instrument [Line Items] |
|
|
| Credit facility |
$ 5,000,000,000
|
|
| Credit facility, expiration date |
Nov. 01, 2016
|
|
| Credit Facility Expire on November 14th 2018 |
|
|
| Debt Instrument [Line Items] |
|
|
| Credit facility |
$ 5,000,000,000
|
|
| Credit facility, expiration date |
Nov. 14, 2018
|
|
| Commercial paper |
|
|
| Debt Instrument [Line Items] |
|
|
| Commercial paper, weighted average interest rate |
0.36%
|
0.11%
|
| Commercial paper | Lower Limit |
|
|
| Debt Instrument [Line Items] |
|
|
| Commercial paper, maturity term |
26 days
|
8 days
|
| Commercial paper | Upper Limit |
|
|
| Debt Instrument [Line Items] |
|
|
| Commercial paper, maturity term |
91 days
|
63 days
|