XML 66 R53.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Acquisitions (Finite Lived Intangible Assets Acquired) (Details) - USD ($) $ in Millions | Oct. 06, 2015 | Sep. 02, 2014 | Jun. 30, 2017 | Jul. 01, 2016
--- | --- | --- | --- | ---
In Process Research and Development [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired identifiable intangible asset, In-process research and development |  |  | $ 14 | $ 14
Dot Hill [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired identifiable intangible asset, finite-lived, Amount | $ 238 |  |  |
Total acquired identifiable intangible assets acquired | $ 252 |  |  |
Acquired identifiable intangible asset, Weighted Average Useful Life (in years) | 5 years 6 months |  |  |
Dot Hill [Member] | In Process Research and Development [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired identifiable intangible asset, In-process research and development | $ 14 |  |  |
Dot Hill [Member] | Technology-Based Intangible Assets [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired identifiable intangible asset, finite-lived, Amount | $ 164 |  |  |
Acquired identifiable intangible asset, Weighted Average Useful Life (in years) | 5 years |  |  |
Dot Hill [Member] | Customer relationships [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired identifiable intangible asset, finite-lived, Amount | $ 71 |  |  |
Acquired identifiable intangible asset, Weighted Average Useful Life (in years) | 7 years |  |  |
Dot Hill [Member] | Trade names [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired identifiable intangible asset, finite-lived, Amount | $ 3 |  |  |
Acquired identifiable intangible asset, Weighted Average Useful Life (in years) | 5 years |  |  |
LSI’s Accelerated Solutions Division (“ASD”) and Flash Components Division (“FCD”) [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired identifiable intangible asset, finite-lived, Amount |  | $ 141 |  |
Total acquired identifiable intangible assets acquired |  | $ 141 |  |
Acquired identifiable intangible asset, Weighted Average Useful Life (in years) |  | 3 years 8 months 12 days |  |
LSI’s Accelerated Solutions Division (“ASD”) and Flash Components Division (“FCD”) [Member] | Technology-Based Intangible Assets [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired identifiable intangible asset, finite-lived, Amount |  | $ 84 |  |
Acquired identifiable intangible asset, Weighted Average Useful Life (in years) |  | 3 years 6 months |  |
LSI’s Accelerated Solutions Division (“ASD”) and Flash Components Division (“FCD”) [Member] | Customer relationships [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired identifiable intangible asset, finite-lived, Amount |  | $ 40 |  |
Acquired identifiable intangible asset, Weighted Average Useful Life (in years) |  | 3 years 9 months |  |
LSI’s Accelerated Solutions Division (“ASD”) and Flash Components Division (“FCD”) [Member] | Trade names [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired identifiable intangible asset, finite-lived, Amount |  | $ 17 |  |
Acquired identifiable intangible asset, Weighted Average Useful Life (in years) |  | 4 years 6 months |  |

X
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
Name: | us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_InProcessResearchAndDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=stx_DotHillMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TechnologyBasedIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=stx_LSIsAcceleratedSolutionsDivisionASDandFlashComponentsDivisionFCDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |