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Schedule of Rollforward of Noncontrolling Interest Balance (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Noncontrolling Interest [Line Items]    
Noncontrolling interest beginning balance $ 286,996  
Net income attributable to noncontrolling interest 7,650 7,704
Distributions to noncontrolling interest (7,614)  
Foreign currency translation adjustment (3,840)  
Noncontrolling interest ending balance $ 283,192