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BUSINESS COMBINATIONS, Investments (Accounted for under the Equity Method) (Details) - Jun. 30, 2015 - Global Marine Systems Limited [Member]
£ in Millions, $ in Millions
USD ($)
GBP (£)
Schedule of Equity Method Investments [Line Items]    
Preliminary fair value   £ 18.2
Carrying value of investment   25.2
Basis difference amount $ 11.4 7.0
Accretion period 10 years  
Sino British Submarine Systems [Member]    
Schedule of Equity Method Investments [Line Items]    
Discount rate (in hundredths) 35.00%  
Preliminary fair value $ 16.9 10.4
Sino British Submarine Systems [Member] | Income Capitalization Method [Member]    
Schedule of Equity Method Investments [Line Items]    
Weight of input (in hundredths) 50.00%  
Sino British Submarine Systems [Member] | Guideline Public Company Method [Member]    
Schedule of Equity Method Investments [Line Items]    
Weight of input (in hundredths) 50.00%  
Huawei Marine Networks [Member]    
Schedule of Equity Method Investments [Line Items]    
Discount rate (in hundredths) 30.00%  
Preliminary fair value $ 7.0 4.3
Huawei Marine Networks [Member] | Income Capitalization Method [Member]    
Schedule of Equity Method Investments [Line Items]    
Weight of input (in hundredths) 50.00%  
Huawei Marine Networks [Member] | Book Value of Equity [Member] [Member]    
Schedule of Equity Method Investments [Line Items]    
Weight of input (in hundredths) 50.00%  
International Cableship [Member]    
Schedule of Equity Method Investments [Line Items]    
Discount rate (in hundredths) 20.00%  
Preliminary fair value $ 4.5 2.8
Sembawang Cable Depot Pte Ltd [Member]    
Schedule of Equity Method Investments [Line Items]    
Discount rate (in hundredths) 20.00%  
Preliminary fair value $ 0.7 1.1
Sembawang Cable Depot Pte Ltd [Member] | Income Capitalization Method [Member]    
Schedule of Equity Method Investments [Line Items]    
Weight of input (in hundredths) 50.00%  
Sembawang Cable Depot Pte Ltd [Member] | Guideline Public Company Method [Member]    
Schedule of Equity Method Investments [Line Items]    
Weight of input (in hundredths) 50.00%  
Other Investments [Member]    
Schedule of Equity Method Investments [Line Items]    
Preliminary fair value $ 0.5 £ 0.3