XML 101 R78.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Acquisitions and Dispositions - Allocation of Acquired Intangible Assets and Liabilities Related Estimates of Useful Lives (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Apr. 29, 2016 | Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Acquired intangible assets, purchase price | $ 404,506 |
Minimum [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful life of finite-lived intangible assets |  | 1 year
Maximum [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful life of finite-lived intangible assets |  | 18 years
Order Backlog [Member] | Newport [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Acquired intangible assets, purchase price | $ 12,100 |
Estimated useful life of finite-lived intangible assets | 1 year |
Customer Relationships [Member] | Newport [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Acquired intangible assets, purchase price | $ 247,793 |
Customer Relationships [Member] | Newport [Member] | Minimum [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful life of finite-lived intangible assets | 6 years |
Customer Relationships [Member] | Newport [Member] | Maximum [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful life of finite-lived intangible assets | 18 years |
Trademarks and Trade Names [Member] | Newport [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Acquired intangible assets, purchase price | $ 55,900 |
Estimated useful life of finite-lived intangible assets | Indefinite |
Developed Technology [Member] | Newport [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Acquired intangible assets, purchase price | $ 75,386 |
Developed Technology [Member] | Newport [Member] | Minimum [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful life of finite-lived intangible assets | 4 years |
Developed Technology [Member] | Newport [Member] | Maximum [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful life of finite-lived intangible assets | 8 years |
In-process Research and Development [Member] | Newport [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Acquired intangible assets, purchase price | $ 6,899 |
Estimated useful life of finite-lived intangible assets | Undefined |
Leasehold Interest Favorable [Member] | Newport [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Acquired intangible assets, purchase price | $ 6,428 |
Leasehold Interest Favorable [Member] | Newport [Member] | Minimum [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful life of finite-lived intangible assets | 4 years |
Leasehold Interest Favorable [Member] | Newport [Member] | Maximum [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful life of finite-lived intangible assets | 5 years |
Leasehold Interest Unfavorable [Member] | Newport [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Acquired intangible assets, purchase price | $ 4,302 |

X
- Definition Finite lived intangible asset useful life description. + References No definition available. + Details
Name: | mksi_FiniteLivedIntangibleAssetUsefulLifeDescription
Namespace Prefix: | mksi_
Data Type: | xbrli:stringItemType
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_AcquiredFiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
Name: | us-gaap_FinitelivedIntangibleAssetsAcquired1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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