XML 77 R63.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Business Segment, Geographic Area, Product and Significant Customer Information - Additional Information (Detail) | 3 Months Ended
--- | ---
Mar. 31, 2014 Customer Segment Product
Segment Reporting [Abstract] |
Number of reportable segments | 4
Number of operating segments | 8
Number of product groups | 3
Number of customers with net revenues greater than 10% of total net revenues | 2
Entity wide net revenue major customer percentage minimum | 10.00%

X
- Definition Entity wide net revenue major customer percentage minimum. + References No definition available. + Details
Name: | mksi_EntityWideRevenueMajorCustomerPercentageMinimum
Namespace Prefix: | mksi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of major customers. + References No definition available. + Details
Name: | mksi_NumberOfMajorCustomers
Namespace Prefix: | mksi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of product groups. + References No definition available. + Details
Name: | mksi_NumberOfProductGroups
Namespace Prefix: | mksi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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