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Financing Agreements - Financing Agreements - Additional Information (Detail)
3 Months Ended 9 Months Ended 1 Months Ended 9 Months Ended 3 Months Ended
Sep. 30, 2014
USD ($)
Sep. 30, 2013
USD ($)
Sep. 30, 2014
USD ($)
Sep. 30, 2013
USD ($)
Jul. 31, 2013
Senior Notes Sold In 2013 [Member]
USD ($)
Jun. 30, 2013
Revolving Facility [Member]
USD ($)
Sep. 30, 2014
Revolving Facility [Member]
USD ($)
Sep. 30, 2014
Revolving Facility [Member]
Minimum [Member]
Sep. 30, 2014
Revolving Facility [Member]
Maximum [Member]
Dec. 31, 2013
European Receivables Loan Facility [Member]
USD ($)
Dec. 31, 2013
European Receivables Loan Facility [Member]
EUR (€)
Debt Instrument [Line Items]                      
Senior notes issued         $ 750,000,000            
Net proceeds of the offering         734,000,000            
Debt issuance cost         16,000,000 3,000,000          
Current aggregate facility             500,000,000       75,000,000
Write-off of deferred financing cost          2,000,000   2,000,000       2,000,000  
Line of credit facility, unused capacity, benchmark             50.00%        
Commitment fee rate               0.25% 0.375%    
Line of credit facility, maximum letters of credit             300,000,000        
Fronting fee rate             0.125%        
Line of credit facility, amount outstanding             0     0  
Utilized letters of credit             43,000,000        
Borrowing base collateral             369,000,000        
Available borrowing capacity             $ 326,000,000