XML 61 R72.htm IDEA: XBRL DOCUMENT v2.4.0.6
Long-Term Debt (Details 2) (USD $)
 1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended
Nov. 30, 2010
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
7.25% senior notes due December 2018
Nov. 30, 2010
7.25% senior notes due December 2018
Dec. 31, 2012
7.25% senior notes due December 2018
Prior to December 1, 2013
Dec. 31, 2012
7.25% senior notes due December 2018
Twelve month period beginning December 1, 2013
Dec. 31, 2012
7.25% senior notes due December 2018
Twelve month period beginning December 1, 2014
Dec. 31, 2012
7.25% senior notes due December 2018
Twelve month period beginning December 1, 2015
Dec. 31, 2012
7.25% senior notes due December 2018
Beginning December 1, 2016 and thereafter
Dec. 31, 2012
4.25% convertible senior notes due June 2014
Dec. 31, 2011
4.25% convertible senior notes due June 2014
Dec. 31, 2010
4.25% convertible senior notes due June 2014
Jun. 30, 2009
4.25% convertible senior notes due June 2014
Dec. 31, 2012
4.75% convertible senior notes due January 2014
Dec. 31, 2003
4.75% convertible senior notes due January 2014
Dec. 31, 2012
4.75% convertible senior notes due January 2014
January 15, 2011 to January 14, 2013
Dec. 31, 2012
4.75% convertible senior notes due January 2014
January 15, 2013 and thereafter
Mar. 31, 2012
Revolving credit facility due July 2016
Jul. 31, 2011
Revolving credit facility due July 2016
Mar. 31, 2012
Revolving credit facility due July 2016
Sep. 30, 2011
Revolving credit facility due July 2016
Dec. 31, 2012
Revolving credit facility due July 2016
Dec. 31, 2012
Revolving credit facility due July 2016
LIBOR
Dec. 31, 2012
Revolving credit facility due July 2016
LIBOR
Low end of range
Dec. 31, 2012
Revolving credit facility due July 2016
LIBOR
High end of range
Dec. 31, 2012
Revolving credit facility due July 2016
Base rate loans
Dec. 31, 2012
Revolving credit facility due July 2016
Base rate loans
Low end of range
Dec. 31, 2012
Revolving credit facility due July 2016
Base rate loans
High end of range
Dec. 31, 2012
Revolving credit facility due July 2016
Federal Funds
Dec. 31, 2012
Revolving credit facility due July 2016
one-month LIBOR
Mar. 31, 2011
Asset Backed Securitization Facility
Nov. 30, 2010
Partnership's asset-backed securitization facility
Nov. 30, 2010
Partnership's revolving credit facility and term loan facility due November 2015
Mar. 31, 2012
Partnership's revolving credit facility and term loan facility due November 2015
Dec. 31, 2012
Partnership's revolving credit facility and term loan facility due November 2015
Nov. 30, 2011
Partnership's revolving credit facility and term loan facility due November 2015
Mar. 31, 2012
Partnership's revolving credit facility due November 2015
Mar. 31, 2011
Partnership's revolving credit facility due November 2015
Nov. 30, 2010
Partnership's revolving credit facility due November 2015
Dec. 31, 2012
Partnership's revolving credit facility due November 2015
Dec. 31, 2012
Partnership's revolving credit facility due November 2015
LIBOR
Dec. 31, 2012
Partnership's revolving credit facility due November 2015
LIBOR
Low end of range
Dec. 31, 2012
Partnership's revolving credit facility due November 2015
LIBOR
High end of range
Dec. 31, 2012
Partnership's revolving credit facility due November 2015
Base rate loans
Dec. 31, 2012
Partnership's revolving credit facility due November 2015
Base rate loans
Low end of range
Dec. 31, 2012
Partnership's revolving credit facility due November 2015
Base rate loans
High end of range
Dec. 31, 2012
Partnership's revolving credit facility due November 2015
Federal Funds
Dec. 31, 2012
Partnership's revolving credit facility due November 2015
one-month LIBOR
Nov. 30, 2010
Partnership's term loan facility due November 2015
Dec. 31, 2012
Partnership's term loan facility due November 2015
Dec. 31, 2012
Partnership's term loan facility due November 2015
LIBOR
Dec. 31, 2012
Partnership's term loan facility due November 2015
LIBOR
Low end of range
Dec. 31, 2012
Partnership's term loan facility due November 2015
LIBOR
High end of range
Dec. 31, 2012
Partnership's term loan facility due November 2015
Base rate loans
Dec. 31, 2012
Partnership's term loan facility due November 2015
Base rate loans
Low end of range
Dec. 31, 2012
Partnership's term loan facility due November 2015
Base rate loans
High end of range
Nov. 30, 2010
Partnership's previous senior secured credit facility
Long-term Debt                                                                                                                      
Expiration period of credit facility                                         5 years                           5 years                                                
Revolving credit facility borrowing capacity                                       $ 900,000,000 $ 1,100,000,000 $ 900,000,000                               $ 550,000,000   $ 550,000,000 $ 400,000,000                   $ 150,000,000                
Transaction costs   1,011,000 8,823,000 12,034,000                                 7,800,000                           4,000,000 500,000                                              
Write-off of deferred financing costs                                           1,300,000 1,600,000                   1,400,000   200,000                                                
Borrowings                                         387,300,000                                                                            
Decrease in borrowing capacity                                       200,000,000                                                                              
Borrowings                                                                                 304,000,000                   150,000,000                
Outstanding borrowings                                               70,000,000                                                                      
Debt instrument, variable rate basis                                                 LIBOR     base rate     Federal Funds Rate one-month LIBOR                     LIBOR     base rate     Federal Funds Rate one-month LIBOR     LIBOR     base rate      
Debt instrument, basis spread on variable rate (as a percent)                                                 1.75% 1.50% 2.50%   0.50% 1.50% 0.50% 1.00%                     2.50% 2.25% 3.25%   1.25% 2.25% 0.50% 1.00%     2.75% 2.50% 3.50%   1.50% 2.50%  
Weighted average annual interest rate (as a percent)                                               2.00%                                   2.80%                   3.00%              
Outstanding letters of credit                                               183,900,000                                                                      
Undrawn capacity under revolving credit facility                                               646,100,000                                   219,500,000                                  
Available additional borrowings under revolving credit facility                                                                                   199,400,000                                  
Percentage of equity interests in first tier foreign subsidiaries                                               65.00%                                                                      
Maximum additional commitment amount                                               300,000,000                                                                      
Minimum adjusted EBITDA to total interest expense ratio                                               2.25                                                                      
Maximum consolidated total debt to adjusted EBITDA ratio                                               5.0                                                                      
Maximum senior secured debt to adjusted EBITDA ratio                                               4.0                                                                      
Repayment of long term debt   2,106,639,000 2,036,171,000 2,478,397,000                                                         6,000,000 30,000,000                                                 406,100,000
Amount of interest rate swap termination payments 14,800,000                                                                                                                    
Increase in borrowing capacity                                                                             200,000,000 150,000,000                                      
Minimum EBITDA to total interest expense ratio                                                                         3.0                                            
Minimum revised EBITDA to total interest expense ratio                                                                         2.75                                            
Maximum total debt to EBITDA ratio                                                                         4.75                                            
Maximum revised total debt to EBITDA ratio                                                                         5.25                                            
Principle amount of senior notes           350,000,000                 355,000,000   143,750,000                                                                                    
Interest rate (as a percent)         7.25% 7.25%           4.25%     4.25% 4.75% 4.75%                                                                                    
Maximum percentage of the aggregate principal amount of debt instruments that may be redeemed prior to December 1, 2013         35.00%                                                                                                            
Redemption price as percentage of principal amount             107.25% 105.438% 103.625% 101.813% 100.00%             100.00%                                                                                  
Minimum notes remaining outstanding if notes redeemed prior to December 1, 2013 (as a percent)         65.00%                                                                                                            
Maximum number of days within which the entity may redeem a percentage of the note following the date of the closing of equity offering         120 days                                                                                                            
Initial conversion rate of debt instrument (Shares per USD)                       0.0431951       0.0216667                                                                                      
Initial conversion price per common stock shares (in dollars per share)                       $ 23.15       $ 46.15                                                                                      
Interest expense related to amortization of debt discount   20,523,000 18,323,000 16,364,000               20,500,000 18,300,000 16,400,000                                                                                          
Recognized interest expense related to the contractual interest coupon                       15,100,000 15,100,000 15,100,000                                                                                          
Effective interest rate (as a percent)                       11.67%                                                                                              
Price per share of common stock for call options purchased                       $ 23.15                                                                                              
Warrant Exercise Price                       $ 32.67                                                                                              
Debt instrument face amount for effective conversion price                       325,000,000                                                                                              
Effective conversion price (in dollars per share)                               3267.00%                                                                                      
Minimum percentage of conversion price for common stock price to exceed between January 15, 2011 and January 15, 2013 in order to redeem notes                                   135.00%                                                                                  
Minimum number of trading days for the entity's common stock price to exceed specified percentage of conversion price during specified number of days in order to redeem notes                                   20 days                                                                                  
Number of consecutive trading days to be considered to meet trading days minimum requirement for the entity's common stock price to exceed specified percentage of conversion price during specified number of days in order to redeem notes                                   30 days                                                                                  
Percentage of principal amount at which notes may be required to be repurchased in event of change of control                                     100.00%                                                                                
Long-term Debt Maturity Schedule                                                                                                                      
2014   498,750,000                                                                                                                  
2015   680,500,000                                                                                                                  
2016   70,000,000                                                                                                                  
Thereafter   350,000,000                                                                                                                  
Total Long-Term Debt   1,599,250,000                                                                                                                  
Amount of unamortized discount of notes                       $ 34,300,000 $ 54,900,000   $ 97,900,000