Financial Instruments (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative [Line Items]
Pre-tax net gains and losses on certain loans designated as hedges of net investments in foreign subsidiaries	$ (9,800,000)	$ (5,300,000)	$ 6,300,000
Foreign currency forward exchange contracts
Derivative [Line Items]
U.S. Dollar Equivalent	541,850,000	434,095,000
Recognized Gain (Loss)	(2,028,000)	(923,000)
Foreign currency forward exchange contracts | Affiliated Entity [Member]
Derivative [Line Items]
U.S. Dollar Equivalent	121,200,000
Recognized Gain (Loss)	700,000
Foreign currency forward exchange contracts | Short [Member] | British pounds sterling
Derivative [Line Items]
U.S. Dollar Equivalent	26,931,000	0
Recognized Gain (Loss)	(277,000)	0
Foreign currency forward exchange contracts | Short [Member] | Euros
Derivative [Line Items]
U.S. Dollar Equivalent	248,943,000	264,234,000
Recognized Gain (Loss)	(335,000)	(1,082,000)
Foreign currency forward exchange contracts | Short [Member] | Other currencies
Derivative [Line Items]
U.S. Dollar Equivalent	12,708,000	2,811,000
Recognized Gain (Loss)	(134,000)	(15,000)
Foreign currency forward exchange contracts | Long [Member] | British pounds sterling
Derivative [Line Items]
U.S. Dollar Equivalent	1,976,000	6,141,000
Recognized Gain (Loss)	15,000	58,000
Foreign currency forward exchange contracts | Long [Member] | Euros
Derivative [Line Items]
U.S. Dollar Equivalent	242,385,000	116,618,000
Recognized Gain (Loss)	(1,335,000)	187,000
Foreign currency forward exchange contracts | Long [Member] | Other currencies
Derivative [Line Items]
U.S. Dollar Equivalent	8,907,000	44,291,000
Recognized Gain (Loss)	38,000	(71,000)
Derivatives Designated as Hedging Instruments | Maturing 2018
Derivative [Line Items]
U.S. Dollar Equivalent	250,000,000
Derivatives Designated as Hedging Instruments | Maturing 2020
Derivative [Line Items]
U.S. Dollar Equivalent	220,000,000
Derivatives Designated as Hedging Instruments | Maturing 2013 through 2017
Derivative [Line Items]
U.S. Dollar Equivalent	$ 10,200,000