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Commitments and Contingencies Textuals (Details)
6 Months Ended 12 Months Ended
Jun. 29, 2012
Moosup [Member]
USD ($)
Jun. 29, 2012
New Hartford [Member]
USD ($)
Jun. 29, 2012
Bloomfield [Member]
USD ($)
Jun. 29, 2012
United Kingdom [Member]
GBP (£)
Dec. 31, 2008
United Kingdom [Member]
GBP (£)
Jun. 29, 2012
Other accruals and payables [Member]
Moosup [Member]
USD ($)
Jun. 29, 2012
Other accruals and payables [Member]
New Hartford [Member]
USD ($)
Jun. 29, 2012
Other accruals and payables [Member]
Bloomfield [Member]
USD ($)
Jun. 29, 2012
Other accruals and payables [Member]
United Kingdom [Member]
USD ($)
Jun. 29, 2012
Future Payments for Revenue Sharing Agreement [Member]
SH-2G(A) Super Seasprite Program [Member]
Commonwealth of Australia [Member]
Revenue Sharing Agreement [Member]
USD ($)
Jun. 29, 2012
Future Payments for Revenue Sharing Agreement [Member]
SH-2G(A) Super Seasprite Program [Member]
Commonwealth of Australia [Member]
Revenue Sharing Agreement [Member]
AUD
Loss Contingencies [Line Items]                      
Contractual Obligation, Due in Next Twelve Months                   $ 6,600,000 6,400,000
Accrual for Environmental Loss Contingencies, Payments 2,300,000 500,000 4,300,000 800,000              
Accrual for Environmental Loss Contingencies 4,300,000 2,200,000   600,000   100,000 300,000 1,900,000 900,000    
Site Contingency, Accrual, Discount Amount     10,300,000                
Site Contingency, Accrual, Undiscounted Amount     20,800,000                
Site Contingency, Accrual, Discount Rate     8.00%                
Environmental Exit Costs, Anticipated Cost         1,600,000            
Enviromental Remediation Liability Released to Income       £ 200,000