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Summarized Statement of Balance Sheet Information for Vasconia in USD and MXN (Detail) (Grupo Vasconia S.A.B.)
In Thousands, unless otherwise specified
Dec. 31, 2012
USD ($)
Dec. 31, 2012
MXN
Dec. 31, 2011
USD ($)
Dec. 31, 2011
MXN
Schedule of Equity Method Investments [Line Items]        
Current assets $ 106,953 1,386,731 $ 54,262 756,792
Non-current assets 75,511 979,059 42,904 598,382
Current liabilities 29,282 379,663 14,645 204,254
Non-current liabilities $ 44,405 575,746 $ 7,310 101,953