Reclassifications from Accumulated Other Comprehensive Income - Amounts Reclassified from AOCI (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Reclassifications from Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	$ (1,568)		$ 0		$ (2,123)		$ 0
Net sales	(812,171)		(833,165)		(1,586,423)		(1,626,649)
Cost of sales	693,346		727,607		1,372,497		1,432,578
Prior service cost and recognized actuarial loss amortization related to pensions	(338)		(266)		(676)		(531)
Available-for-sale investment | Reclassifications from Accumulated Other Comprehensive Income
Reclassifications from Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	0		0		(561)		0
Accumulated net gain (loss) from designated or qualifying cash flow hedges | Currency hedge portfolio | Reclassifications from Accumulated Other Comprehensive Income
Reclassifications from Accumulated Other Comprehensive Income [Line Items]
Net sales	6,582		0		15,214		(4,381)
Accumulated net gain (loss) from designated or qualifying cash flow hedges | Bunker fuel forward contracts | Reclassifications from Accumulated Other Comprehensive Income
Reclassifications from Accumulated Other Comprehensive Income [Line Items]
Cost of sales	(2,151)		(4,139)		(4,990)		(9,653)
Prior service cost and recognized actuarial loss amortization related to pensions | Reclassifications from Accumulated Other Comprehensive Income
Reclassifications from Accumulated Other Comprehensive Income [Line Items]
Prior service cost and recognized actuarial loss amortization related to pensions	$ 338	[1]	$ 266	[1]	$ 676	[1]	$ 531	[1]

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension cost. See Note 8 for further details.