Derivative Financial Instruments and Hedging Activities - Balance Sheet Location (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	$ (11,066)	[1]
Fair value, derivative asset	69	[1]
Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(4,623)	[1]
Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(6,443)	[1]
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	69	[1]
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(174)	[1]
Foreign Exchange Option [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(352)	[1]
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(2,843)	[1]
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(6,443)	[1]
Fuel [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Fair value, derivative asset	69	[1]
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	(891)	[1]
Cash Flow Hedging [Member] | Foreign Exchange Option [Member] | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value, derivative liability	$ (363)	[1]

[1] See Note 10 — Fair Value Measurements for further information on the fair value of our derivatives including their classification within the fair value hierarchy.