| Component: (Network and Table) | |
|---|---|
| Network | 1054 - Disclosure - Allowance for Doubtful Accounts (Detail) (http://www.microsoft.com/taxonomy/role/DisclosureAllowanceForDoubtfulAccounts) |
| Table | Valuation and Qualifying Accounts Disclosure [Table] |
| Reporting Entity [Axis] | 0000789019 (http://www.sec.gov/CIK) |
| Legal Entity [Axis] | Entity [Domain] |
| Valuation Allowances And Reserves Type [Axis] | Allowance For Doubtful Accounts [Member] |
| Valuation and Qualifying Accounts Disclosure [Line Items] | Period [Axis] | ||
|---|---|---|---|
2012-07-01 - 2013-06-30 | 2011-07-01 - 2012-06-30 | 2010-07-01 - 2011-06-30 | |
Balance, beginning of period | 389,000,000 | 333,000,000 | 375,000,000 |
Charged to costs and other | 4,000,000 | 115,000,000 | 14,000,000 |
Write-offs | (57,000,000) | (59,000,000) | (56,000,000) |
Balance, end of period | 336,000,000 | 389,000,000 | 333,000,000 |