Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Income Tax Expense (Detail)

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Income Taxes - Components of Income Tax Expense (Detail) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Current:      
Foreign $ 89,600,000 $ 94,700,000 $ 75,600,000
Federal 84,200,000 57,800,000 30,300,000
State 8,900,000 7,600,000 8,300,000
Current Income Tax Expense (Benefit), Total 182,700,000 160,100,000 114,200,000
Deferred:      
Foreign (5,600,000) (12,400,000) (3,200,000)
Federal (4,600,000) (100,000) (30,700,000)
State 1,200,000 (400,000) 600,000
Deferred Income Tax Expense (Benefit), Total (9,050,000) (12,984,000) (33,313,000)
Total $ 173,700,000 $ 147,200,000 $ 80,900,000