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Reconciliation of U.S Federal Income Tax Statutory Rate and Effective Income Tax Rate (Detail)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Taxes [Abstract]      
U.S. federal statutory rate 35.00% 35.00% 35.00%
State and local income taxes, net of federal tax benefits 4.90% 4.20% (7.00%)
Changes in valuation allowances 0.90% (1.30%) 15.10%
Taxes on foreign operations at rates different than statutory U.S. federal rates   (13.20%) [1] (22.00%) [1]
Resolution of prior years' examination issues (42.50%)    
Non-deductible transaction-related costs 0.30% 146.50%  
Other non-deductible expenses 5.30% 10.10% 5.40%
Other (0.60%) (0.70%) (1.50%)
Effective Income Tax Rate, Continuing Operations, Total 3.30% 180.60% 25.00%
[1] In 2010, the Company realized a benefit relating to additional tax depreciation within the Company's operations in Australia.