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Accrued Expenses and Other Current Liabilities
6 Months Ended
Jun. 30, 2011
Accrued Expenses and Other Current Liabilities [Abstract]  
Accrued Expenses and Other Current Liabilities
 
8.  Accrued Expenses and Other Current Liabilities
 
Accrued expenses and other current liabilities consisted of:
 
                 
    June 30,
    December 31,
 
(in $ millions)   2011     2010  
 
Accrued commissions and incentives
    266       232  
Accrued payroll and related
    63       33  
Accrued interest expense
    53       61  
Accrued sponsor monitoring fees
    37       42  
Derivative contracts
    19       35  
Accrued travel supplier payments, deferred revenue and customer advances
    18       17  
Other
    77       54  
                 
      533       474