Inventories (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Inventories (Textual) [Abstract]
Inventories at cost as per LIFO	$ 98.1us-gaap_LIFOInventoryAmount	$ 83.4us-gaap_LIFOInventoryAmount
Inventories at average cost or FIFO methods	241.8	240.2
LIFO (income) expense (less than .1 million in 2014)	(0.1)tdy_LifoExpense	(0.7)tdy_LifoExpense	0.1tdy_LifoExpense
Reserves for excess, slow moving and obsolete inventory	55.3us-gaap_InventoryAdjustments	44.8us-gaap_InventoryAdjustments
Inventories related to long-term contracts, before progress payments	40.3	40.7
Progress payments related to long-term contracts, noncurrent	$ 1.5	$ 0.1

Inventories at average cost or FIFO methods.

No definition available.

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- Details

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- Definition

LIFO Expense

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Progress Payments Netted Against Inventory for Long-term Contracts or Programs, Noncurrent

+ References

No definition available.

+ Details

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- Definition

Certain changes made in the current period to the value and amount of inventory reported.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph b

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=28360613&loc=d3e4492-108314

+ Details

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- Definition

Amount before valuation and LIFO reserves, and progress payments, of inventory associated with long-term contracts, expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph a, d

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a),(d))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	instant

- Definition

The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766

+ Details

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Balance Type:	debit
Period Type:	instant