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Allowance for Doubtful Accounts (Detail) (Allowance for doubtful accounts, USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2012
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Allowance for doubtful accounts
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| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance, beginning of period | $ 336 | $ 389 | $ 333 |
| Charged to costs and other | 16 | 4 | 115 |
| Write-offs | (51) | (57) | (59) |
| Balance, end of period | $ 301 | $ 336 | $ 389 |