Derivative Financial Instruments and Hedging Activities Schedule of Notional Amounts of Outstanding Derivative Positions (Details) (USD $)	Dec. 31, 2013
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign currency exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 32,300,000	[1]
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign currency option contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	38,000,000	[1]
Not Designated as Hedging Instrument [Member] | Foreign currency exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	1,950,000	[1]
Not Designated as Hedging Instrument [Member] | Foreign currency option contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	4,000,000	[1]
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 183,851,000	[1]
Not Designated as Hedging Instrument [Member] | Fuel hedge contracts [Member]
Derivatives, Fair Value [Line Items]
Nonmonetary Notional Amount	38,000	[1]

[1] All notional amounts are stated in thousands of dollars except fuel hedge contracts which are denominated in thousands of barrels.