XML 69 R56.htm IDEA: XBRL DOCUMENT v3.10.0.1
Derivatives and Hedging Activities - Foreign Cross Currency Derivatives (Details) - Net Investment Hedging - Designated as Hedging Instrument
$ in Thousands, £ in Millions
Sep. 30, 2018
USD ($)
derivative
Dec. 31, 2017
USD ($)
derivative
Jul. 24, 2017
GBP (£)
Derivative [Line Items]      
Number of Instruments (derivative) 1 5  
Notional Amount | $ $ 64,007 $ 121,603  
EUR | Cross currency swaps      
Derivative [Line Items]      
Number of Instruments (derivative) 0 3  
Notional Amount | $ $ 0 $ 43,222  
EUR | Foreign currency forwards      
Derivative [Line Items]      
Number of Instruments (derivative) 0 1  
Notional Amount | $ $ 0 $ 12,099  
GBP | Cross currency swaps      
Derivative [Line Items]      
Number of Instruments (derivative) 1 1  
Notional Amount $ 64,007 $ 66,282 £ 49.1