Derivative Financial Instruments and Hedging Activities - Schedule of derivatives on the Consolidated Statements of Income and Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign currency exchange contracts [Member] | Other operating (income) expense
Derivative Instruments, Gain (Loss) [Line Items]
Designated hedged item, gain (loss) recognized in income	$ 0	$ 652
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign currency exchange contracts [Member] | Other comprehensive income (loss)
Derivative Instruments, Gain (Loss) [Line Items]
Designated hedged item, gain (loss) recognized in other comprehensive income	(1,069)	950
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign currency option contracts [Member] | Other comprehensive income (loss)
Derivative Instruments, Gain (Loss) [Line Items]
Designated hedged item, gain (loss) recognized in other comprehensive income	(1,647)	460
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Foreign currency exchange contracts [Member] | Other comprehensive income (loss)
Derivative Instruments, Gain (Loss) [Line Items]
Designated hedged item, gain (loss) recognized in other comprehensive income	(145)	0
Not Designated as Hedging Instrument [Member] | Foreign currency exchange contracts [Member] | Other operating (income) expense
Derivative Instruments, Gain (Loss) [Line Items]
Non-designated hedged item, gain (loss) recognized in income	25	(1,607)
Not Designated as Hedging Instrument [Member] | Foreign currency option contracts [Member] | Other operating (income) expense
Derivative Instruments, Gain (Loss) [Line Items]
Non-designated hedged item, gain (loss) recognized in income	7	1,147
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Interest and miscellaneous (expense) income
Derivative Instruments, Gain (Loss) [Line Items]
Non-designated hedged item, gain (loss) recognized in income	5,882	(6,085)
Not Designated as Hedging Instrument [Member] | Fuel hedge contracts [Member] | Cost of sales (benefit)
Derivative Instruments, Gain (Loss) [Line Items]
Non-designated hedged item, gain (loss) recognized in income	$ 160	$ (255)