| Component: (Network and Table) | |
|---|---|
| Network | 1092 - Disclosure - Income Taxes - Additional Information Regarding Examinations (Detail) (http://www.microsoft.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationRegardingExaminations) |
| Table | Income Tax Examination [Table] |
| Reporting Entity [Axis] | 0000789019 (http://www.sec.gov/CIK) |
| Period [Axis] | 2012-07-01 - 2013-06-30 |
| Legal Entity [Axis] | Entity [Domain] |
| Income Tax Examination [Line Items] | Income Tax Authority [Axis] | |||
|---|---|---|---|---|
| Internal Revenue Service I R S [Member] | Foreign Country [Member] | |||
| Range [Axis] | Range [Axis] | |||
| Minimum [Member] | Maximum [Member] | Minimum [Member] | Maximum [Member] | |
Tax years under audit | 2004 | 2006 | ||
Tax years subject to examination | 2007 | 2012 | 1996 | 2012 |