Accumulated Other Comprehensive (Loss) Income Components and Activity in Accumulated Other Comprehensive (Loss) Income Net of Deferred Income Taxes (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance		$ (421,288)	$ (62,413)
Other comprehensive (loss) income, before reclassifications		89,382	(300,525)
Amounts reclassified from accumulated other comprehensive (loss) income		526	556
Total other comprehensive income (loss), net of tax		89,908	(299,969)
Other comprehensive loss attributable to noncontrolling interests		(283)	100
Ending balance		(331,663)	(362,282)
Accumulated Foreign Currency Adjustment Attributable to Parent
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance		(463,372)	(52,264)
Ending balance		(364,745)	(406,735)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive (loss) income, before reclassifications		98,910	(354,571)
Amounts reclassified from accumulated other comprehensive (loss) income		0	0
Total other comprehensive income (loss), net of tax		98,910	(354,571)
Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive loss attributable to noncontrolling interests		(283)	100
Accumulated Defined Benefit Plans Adjustment Attributable to Parent
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance		(758)	0
Ending balance		(757)	2
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive (loss) income, before reclassifications		0	0
Amounts reclassified from accumulated other comprehensive (loss) income	[1]	1	2
Total other comprehensive income (loss), net of tax		1	2
Accumulated Defined Benefit Plans Adjustment Attributable to Noncontrolling Interest
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive loss attributable to noncontrolling interests		0	0
Accumulated Net Investment Gain (Loss)
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance		62,245	11,384
Other comprehensive (loss) income, before reclassifications		(9,524)	54,046
Amounts reclassified from accumulated other comprehensive (loss) income		0	0
Total other comprehensive income (loss), net of tax		(9,524)	54,046
Other comprehensive loss attributable to noncontrolling interests		0	0
Ending balance		52,721	65,430
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance		(18,861)	(20,962)
Ending balance		(18,336)	(20,435)
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive (loss) income, before reclassifications		0	0
Amounts reclassified from accumulated other comprehensive (loss) income	[2]	525	527
Total other comprehensive income (loss), net of tax		525	527
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Noncontrolling Interest
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Other comprehensive loss attributable to noncontrolling interests		0	0
Other Accumulated Comprehensive Income (Loss)
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance		(542)	(571)
Other comprehensive (loss) income, before reclassifications		(4)	0
Amounts reclassified from accumulated other comprehensive (loss) income		0	27
Total other comprehensive income (loss), net of tax		(4)	27
Other comprehensive loss attributable to noncontrolling interests		0	0
Ending balance		$ (546)	$ (544)

[1] The pre-tax portion of amounts reclassified from accumulated other comprehensive (loss) income consists of amortization of prior service benefit, which is a component of pension and postretirement benefits cost (credit). See Note 13, “Pension Plans and Other Postretirement Benefits.”

[2] The pre-tax portion of amounts reclassified from accumulated other comprehensive (loss) income is included in interest expense.