Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments And Hedging Strategies (Recognized Gains (Losses) On Derivative Instruments Not Designated As Hedging Instruments) (Details)

v3.5.0.2
Derivative Instruments And Hedging Strategies (Recognized Gains (Losses) On Derivative Instruments Not Designated As Hedging Instruments) (Details)
$ in Thousands, € in Millions
9 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
EUR (€)
Derivative [Line Items]      
Derivative gains (losses), net $ (109) $ (2,295)  
Derivative, Fixed Interest Rate 0.027%   0.027%
Derivative, Notional Amount $ 16,900   € 15.0
Options on equities and equity indices      
Derivative [Line Items]      
Derivative gains (losses), net 3,095 (699)  
Forward Currency Exchange, Option And Future Contracts [Member]      
Derivative [Line Items]      
Derivative gains (losses), net (186) (474)  
Interest rate swap agreements      
Derivative [Line Items]      
Derivative gains (losses), net (18) (15)  
Commodity swap, option and future contracts, exchange traded      
Derivative [Line Items]      
Derivative gains (losses), net 328 (2,606)  
Commodity swap, option and future contracts, non-exchange traded      
Derivative [Line Items]      
Derivative gains (losses), net 0 1,499  
Not Designated as Hedging Instrument [Member] | Forward Currency Exchange, Option And Future Contracts [Member]      
Derivative [Line Items]      
Derivative, Notional Amount 2,100    
Not Designated as Hedging Instrument [Member] | OSV Partners [Member] | Interest rate swap agreements      
Derivative [Line Items]      
Derivative, Notional Amount $ 39,300    
Derivative, Lower Fixed Interest Rate Range 1.89%   1.89%
Derivative, Higher Fixed Interest Rate Range 2.27%   2.27%
Not Designated as Hedging Instrument [Member] | Dynamic Offshore Drilling Ltd [Member] | Interest rate swap agreements      
Derivative [Line Items]      
Derivative, Fixed Interest Rate 1.30%   1.30%
Derivative, Notional Amount $ 76,400    
Not Designated as Hedging Instrument [Member] | Falcon Global [Member] | Interest rate swap agreements      
Derivative [Line Items]      
Derivative, Fixed Interest Rate 2.06%   2.06%
Derivative, Notional Amount $ 62,500    
Three Point Seven Five Percentage Convertible Notes [Member]      
Derivative [Line Items]      
Embedded Derivative, Gain on Embedded Derivative $ (3,328) $ 0