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Accounts Receivable (Details Textual) (USD $)
In Millions, unless otherwise specified
Dec. 28, 2014
Dec. 29, 2013
Receivables [Abstract]    
Billed contract receivables from long-term contracts $ 12.6tdy_BilledContractReceivablesFromLongTermContracts $ 18.6tdy_BilledContractReceivablesFromLongTermContracts
Unbilled contract receivables from long-term contracts $ 29.4tdy_UnbilledContractReceivablesFromLongTermContracts $ 23.2tdy_UnbilledContractReceivablesFromLongTermContracts