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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 30, 2012
Accounting Policies [Abstract]  
Changes in Product Warranty Reserve
The product warranty reserve is included in current accrued liabilities and long-term liabilities on the balance sheet. Changes in the Company's product warranty reserve are as follows (in millions):
 
2012
 
2011
 
2010
Balance at beginning of year
$
13.3

 
$
13.0

 
$
13.6

Accruals for product warranties charged to expense
9.6

 
5.1

 
4.0

Cost of product warranty claims
(6.9
)
 
(5.9
)
 
(4.8
)
Acquisitions
1.8

 
1.1

 
0.2

Balance at end of period
$
17.8

 
$
13.3

 
$
13.0
Computations of Basic and Diluted Earnings per Share
The following table sets forth the computations of basic and diluted earnings per share (amounts in millions, except per share data):
 
2012
 
2011
 
2010
Net income from continuing operations including noncontrolling interest
$
162.8

 
$
142.1

 
$
120.0

Net income attributable to noncontrolling interest
(1.0
)
 
—

 
(0.1
)
Discontinued operations, net of income taxes
2.3

 
113.1

 
0.6

Net income attributable to Teledyne
$
164.1

 
$
255.2

 
$
120.5

Basic earnings per common share:
 
 
 
 
 
Weighted average common shares outstanding
36.7

 
36.6

 
36.2

Basic earnings per common share
 
 
 
 
 
Continuing operations
$
4.41

 
$
3.88

 
$
3.31

Discontinued operations
0.06

 
3.09

 
0.02

Basic earnings per common share
$
4.47

 
$
6.97

 
$
3.33

Diluted earnings per share:
 
 
 
 
 
Weighted average common shares outstanding
36.7

 
36.6

 
36.2

Dilutive effect of exercise of options outstanding
0.7

 
0.7

 
0.7

Weighted average diluted common shares outstanding
37.4

 
37.3

 
36.9

Diluted earnings per common share
 
 
 
 
 
Continuing operations
$
4.33

 
$
3.81

 
$
3.25

Discontinued operations
0.06

 
3.03

 
0.02

Diluted earnings per common share
$
4.39

 
$
6.84

 
$
3.27
Schedule of Notional Amounts of Outstanding Foreign Currency Contracts
As of December 30, 2012, Teledyne had foreign currency contracts of this type in the following pairs (in millions):
Contracts to Buy
 
Contracts to Sell
Currency
Amount
 
Currency
Amount
Canadian Dollars
C$
2.6

 
Euros
€
(2.0
)
Canadian Dollars
C$
26.3

 
U.S. Dollars
$
(26.3
)
Great Britain Pounds
£
5.5

 
U.S. Dollars
$
(8.9
)
U.S. Dollars
$
8.9

 
Euros
€
(6.8
)
U.S. Dollars
$
2.6

 
Japanese Yen
¥
(218.0
)
U.S. Dollars
$
1.0

 
Korean Won
₩
(1,126.0
)
Fair Values of Derivative Financial Instruments
The fair values of the Company’s derivative financial instruments are presented below. All fair values for these derivatives were measured using Level 2 information as defined by the accounting standard hierarchy (in millions):
Asset/(Liability) Derivatives
Balance sheet location
 
December 30, 2012
 
January 1, 2012
Derivatives designated as hedging instruments:
 
 
 
 
 
Cash flow forward contracts
Other current assets
 
$
0.8

 
$
—

Cash flow forward contracts
Accrued liabilities
 
—

 
(2.0
)
Total derivatives designated as hedging instruments
 
 
0.8

 
(2.0
)
Derivatives not designated as hedging instruments:
 
 
 
 
 
Non-designated forward contracts
Other current assets
 
0.1

 
—

Non-designated forward contracts
Accrued liabilities
 
(0.2
)
 
(0.5
)
Total derivatives not designated as hedging instruments
 
 
(0.1
)
 
(0.5
)
Total asset/(liability) derivatives
 
 
$
0.7

 
$
(2.5
)
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]
The effect of derivative instruments designated as cash flow hedges in our Condensed Consolidated Financial Statements for fiscal year 2012 and 2011 was as follows (in millions):
 
 
2012
 
2011
Net gain (loss) recognized in AOCI (a)
 
$
2.0

 
$
(2.4
)
Net loss reclassified from AOCI into cost of sales (a)
 
$
(0.9
)
 
$
(0.1
)
Net foreign exchange gain recognized in other income and expense (b)
 
$
0.5

 
$
0.5