Accounts Receivable (Details Textual) - USD ($) $ in Millions	Jan. 01, 2017	Jan. 03, 2016
Receivables [Abstract]
Billed contract receivables from long-term contracts	$ 10.6	$ 12.9
Unbilled contract receivables from long-term contracts	$ 36.9	$ 33.8

Unbilled Contract Receivables from Long-term Contracts

No definition available.

Name:	tdy_UnbilledContractReceivablesFromLongTermContracts
Namespace Prefix:	tdy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant