v2.4.0.8

Basis of Presentation and Summary of Significant Accounting Policies (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 28, 2014 | Sep. 27, 2013 | Jun. 27, 2014 | Jun. 28, 2013
Variable Interest Entity [Line Items] |  |  |  |
Number Of Weeks In Fiscal Year Low End Of Range |  |  | 52 | P52W
Number Of Weeks In Fiscal Year High End Of Range |  |  | 53 | P53W
Number Of Weeks In Quarter | P39W | 13 |  | P52W
Number of Weeks in Fiscal Year |  |  | 52 |

X
- Definition Disclosure of the number of weeks of financial results included in the entity's fiscal year. + References No definition available. + Details
Name: | stx_NumberOfWeeksInFiscalYear
Namespace Prefix: | stx_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of the high end of the range of the number of weeks in certain of the entity's fiscal years. + References No definition available. + Details
Name: | stx_NumberOfWeeksInFiscalYearHighEndOfRange
Namespace Prefix: | stx_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of the low end of the range of the number of weeks in certain of the entity's fiscal years. + References No definition available. + Details
Name: | stx_NumberOfWeeksInFiscalYearLowEndOfRange
Namespace Prefix: | stx_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of the number of weeks of financial results included in the entity's quarter. + References No definition available. + Details
Name: | stx_NumberOfWeeksInQuarter
Namespace Prefix: | stx_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration