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Financing Agreements - Additional Information (Details)
3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2013
USD ($)
Sep. 30, 2013
USD ($)
Sep. 30, 2013
Senior Notes
Sep. 30, 2013
New Senior Notes [Member]
USD ($)
Sep. 30, 2013
New Senior Notes [Member]
USD ($)
Sep. 30, 2013
Revolving Credit Facility [Member]
USD ($)
Sep. 30, 2013
Revolving Credit Facility [Member]
USD ($)
Sep. 30, 2013
European Receivables Loan Facility
USD ($)
Sep. 30, 2013
European Receivables Loan Facility
EUR (€)
Sep. 30, 2013
Minimum
Revolving Credit Facility [Member]
Sep. 30, 2013
Maximum
Revolving Credit Facility [Member]
USD ($)
Sep. 30, 2013
Letter of Credit
Revolving Credit Facility [Member]
Sep. 30, 2013
Periods Prior to Fiscal Year September Twenty Sixteen [Member]
New Senior Notes [Member]
Sep. 30, 2013
Periods Prior to Fiscal Year September Twenty Sixteen [Member]
Senior Notes Due September 2021 [Member]
Sep. 30, 2013
Periods Prior to Fiscal Year September Twenty Sixteen [Member]
Senior Notes Due September 2023 [Member]
Sep. 30, 2013
Periods Prior to Fiscal Year September Twenty Sixteen [Member]
Maximum
New Senior Notes [Member]
Debt Instrument [Line Items]                                
Long-term Debt, Weighted Average Interest Rate     6.12%                          
Debt Instrument, Face Amount       $ 750,000,000 $ 750,000,000                      
Debt Instrument Interest Payment Dates         March 15 and September 15                      
Proceeds from Debt, Net of Issuance Costs       734,000,000                        
Percent Of Notes Redeemable Maximum                               35.00%
Debt Redemption Price                           105.375% 106.00%  
Percent Of Notes Outstanding Minimum                         50.00%      
Current aggregate facility           500,000,000 500,000,000 101,000,000 75,000,000   300,000,000          
Write off of Deferred Debt Issuance Cost    2,000,000       2,000,000                    
Unused capacity, benchmark             50.00%                  
Percentage of applicable commitment fee                   0.25% 0.375%          
Percentage of fronting fee                       0.125%        
Line of Credit Facility, Amount Outstanding           0 0 0                
Utilized letters of credit           64,000,000 64,000,000                  
Borrowing base collateral           346,000,000 346,000,000 95,000,000                
Available borrowing capacity           282,000,000 282,000,000                  
Debt Issuance Cost       $ 16,000,000   $ 3,000,000