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Component: (Network and Table)
Network
1089 - Disclosure - Schedule of Amortizable Intangible Assets (Detail)
(http://www.teradyne.com/taxonomy/role/DisclosureScheduleOfAmortizableIntangibleAssets)
TableSchedule of Finite-Lived Intangible Assets
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000097210 (http://www.sec.gov/CIK)
Legal Entity [Axis]Entity [Domain]
Finite-Lived Intangible AssetsPeriod [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
Finite Lived Intangible Assets By Major Class [Axis]Finite Lived Intangible Assets By Major Class [Axis]
Developed Technology Rights [Member]Customer Relationships [Member]Trademarks And Trade Names [Member]Order Or Production Backlog [Member]Finite Lived Intangible Assets Major Class Name [Domain]Developed Technology Rights [Member]Customer Relationships [Member]Trademarks And Trade Names [Member]Order Or Production Backlog [Member]Finite Lived Intangible Assets Major Class Name [Domain]
Gross Carrying Amount
362,055,000  
146,341,000  
33,840,000  
1,000,000  
543,236,000  
357,555,000  
144,971,000  
33,840,000  
1,000,000  
537,366,000  
Accumulated Amortization
193,756,000  
81,742,000  
14,447,000  
1,000,000  
290,945,000  
143,126,000  
63,464,000  
10,909,000  
1,000,000  
218,499,000  
Net Carrying Amount
168,299,000  
64,599,000  
19,393,000  
 
252,291,000  
214,429,000  
81,507,000  
22,931,000  
 
318,867,000  
Weighted Average Useful Life, years
P6Y3M18D  
P8Y  
P9Y  
P4M24D  
P7Y  
P6Y3M18D  
P8Y  
P9Y  
P4M24D  
P7Y