Quarterly report pursuant to Section 13 or 15(d)

Classes of Financial Assets and Financial Liabilities Measured and Recorded at Fair Value on Recurring Basis (Detail)

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Classes of Financial Assets and Financial Liabilities Measured and Recorded at Fair Value on Recurring Basis (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Cash equivalents, money market funds $ 7,438 $ 117
Cash equivalents, time deposits 124,688 89,585
Derivative instruments 57,135 46,328
Investment securities 181,864 175,225
Other marketable securities 4,099 4,913
Derivative instruments 21,618 23,513
Deferred compensation 228,202 220,056
Quoted Prices In Active Markets For Identical Assets, Level 1
   
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Cash equivalents, money market funds 7,438 117
Cash equivalents, time deposits 124,688 89,585
Investment securities 152,730 144,391
Other marketable securities 4,099 4,913
Significant Other Observable Inputs, Level 2
   
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Derivative instruments 57,135 46,328
Investment securities 29,134 30,834
Derivative instruments 21,618 23,513
Deferred compensation $ 228,202 $ 220,056