Other Current Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Prepaid And Other Current Assets [Line Items]
Deferred income taxes-current	$ 4,197	[1]	$ 9,383	[1]
Income tax receivables	26,208		8,303
Prepaid expenses	48,250		45,452
Total	$ 78,655		$ 63,138

[1] See Note 18, "Income Taxes."