Income Taxes - Schedule of Income Tax Provision (Narrative) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2012
Income Tax [Line Items]
Foreign, Current	$ 109,729	$ 122,246	[1]	$ 197,335
Total deferred income tax provision	23,350	(484)		(15,878)
Spanish tax charges [Member]
Income Tax [Line Items]
Foreign, Current		72,000
Non-Resident [Member]
Income Tax [Line Items]
Foreign, Current		12,000
Foreign subsidiaries [Member]
Income Tax [Line Items]
Total deferred income tax provision		$ 11,000

[1] For the year ended December 31, 2012, the foreign current income tax provision includes $72 million of Spanish tax charges and $12 million of charges related to the Spanish dividend withholding cases. For the year ended December 31, 2012, the foreign deferred income tax provision includes an $11 million tax benefit from the corporate restructuring of certain foreign subsidiaries.