| Component: (Network and Table) | |
|---|---|
| Network | 150 - Disclosure - Commitments and Contingencies - Changes in Accrual Warranty (Detail) (http://www.westerndigital.com/taxonomy/role/DisclosureCommitmentsAndContingenciesChangesInAccrualWarranty) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000106040 (http://www.sec.gov/CIK) |
| Commitments And Contingencies Disclosure [Abstract] | Period [Axis] | ||
|---|---|---|---|
2012-06-30 - 2013-06-28 | 2011-07-02 - 2012-06-29 | 2010-07-03 - 2011-07-01 | |
Commitments And Contingencies Disclosure [Abstract] | |||
Warranty accrual, beginning of period | 260,000,000 | 170,000,000 | 170,000,000 |
Warranty liabilities assumed as a result of the Acquisition | xsi:nil | 139,000,000 | xsi:nil |
Charges to operations | 178,000,000 | 154,000,000 | 172,000,000 |
Utilization | (221,000,000) | (196,000,000) | (160,000,000) |
Changes in estimate related to pre-existing warranties | (30,000,000) | (7,000,000) | (12,000,000) |
Warranty accrual, end of period | 187,000,000 | 260,000,000 | 170,000,000 |