v2.4.0.8
Long-Term Obligations - Additional Information (Details) (USD $)
 3 Months Ended 9 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 0 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Sep. 28, 2012
May 03, 2013
Credit Agreement
Dec. 31, 2012
Credit Agreement
Sep. 30, 2013
Credit Agreement
Dec. 31, 2011
Credit Agreement
Sep. 30, 2011
Credit Agreement
Mar. 25, 2011
Credit Agreement
Sep. 30, 2013
Loans Payable
May 03, 2013
Loans Payable
Dec. 31, 2012
Loans Payable
Sep. 28, 2012
Receivables Securitization
Sep. 30, 2013
Receivables Securitization
Dec. 31, 2012
Receivables Securitization
Sep. 30, 2013
Notes Payable
Dec. 31, 2012
Notes Payable
Dec. 31, 2011
Notes Payable
Sep. 30, 2013
Other Long Term Debt
Dec. 31, 2012
Other Long Term Debt
Dec. 31, 2011
Other Long Term Debt
May 03, 2013
Multicurrency Component [Member]
Credit Agreement
May 03, 2013
US Dollar Component [Member]
Credit Agreement
May 03, 2013
Amended Credit Agreement [Member]
Credit Agreement
May 03, 2013
Original Credit Agreement [Member]
Credit Agreement
May 09, 2013
Four Point Seven Five Percent Senior Notes Due May 2023
Debt Instrument                                                              
Credit Agreement, Extension Period of Maturity Date                 2 years                                            
Maximum credit agreement borrowings                 $ 1,800,000,000       $ 1,400,000,000                                    
Maximum revolving credit facility borrowings                         950,000,000                           1,200,000,000 150,000,000      
Debt and Capital Lease Obligations 1,312,055,000   1,312,055,000   1,118,478,000 956,076,000       974,600,000 644,200,000       444,375,000 450,000,000 420,625,000   10,000,000 80,000,000 38,941,000 42,398,000   18,908,000 21,491,000            
Term loan         420,625,000 240,625,000               250,000,000                                  
Maximum incremental term loan borrowings                         200,000,000                                    
Maximum U.S. dollar value of foreign currency borrowings                         500,000,000                                    
Maximum amount of letters of credit                 150,000,000       125,000,000                                    
Swing line loan maximum capacity                 50,000,000       25,000,000                                    
Maximum increase of revolving credit facility or term loans                 400,000,000       400,000,000                                    
Proceeds from the new term loan                   200,000,000                                          
Security interest in subsidiaries pledged as collateral                         100.00%                                    
Pleadge of a foreign subsidiary's voting equity interest evaluated for adverse tax consequences                         100.00%                                    
Minimum security interest percentage in foreign subidiaries                         65.00%                                    
Original principal payment percentage in first and second years                         5.00%                                    
Original principal payment percentage in third and fourth years                         10.00%                                    
Original principal payment percentage in fifth year                         15.00%                                    
Restrictive covenants, maximum permitted receivables facility                         100,000,000                                    
Maximum net leverage ratio                 3.50       3.00                                    
Minimum consideration for acquisitions during 12 month period to change the maximum net leverage ratio                 200,000,000       200,000,000                                    
Maximum Net Leverage Ratio Subsequent To Acquisitions                 4.00       3.50                                    
Maximum net leverage ratio subsequent to acquisition                         3.50                                    
Minimum interest coverage ratio                 3       3                                    
Increment change in applicable margin                 0.25%       0.25%                                    
Weighted average interest rates                   2.85% 3.08% 2.59%             1.01% 1.05% 1.80% 1.70% 2.00% 3.50% 3.30% 3.20%          
Increment change in commitment fees                 0.05%       0.05%                                    
Fronting fee on letters of credit in addition to participation commission                 0.125%       0.125%                                    
Borrowings under credit agreement, carrying value                   974,600,000   901,400,000                                      
Current maturities of credit agreement                   31,900,000 22,500,000 12,500,000                                      
Outstanding letters of credit                   39,900,000 53,200,000                                        
Availability on the revolving credit facility                   356,100,000 1,100,000,000                                        
Write-off of the unamortized balance of capitalized debt issuance costs 0 0 2,795,000 0 0 5,345,000 0                                                
Fees incurred related to the execution of the agreement                       11,000,000               300,000                      
Receivables securitization facility term period                                   3 years                          
Receivables securitization maximum borrowing capacity                                   80,000,000                          
Borrowings under receivable securitization facility, carrying value         80,000,000     77,300,000                       80,000,000                      
Receivables used as collateral for receivables securitization facility                                     110,300,000 116,900,000                      
Margin above LIBOR for receivables secuirtization facility                                   1.25%                          
Promissory notes issued for business acquisitions         16,000,000 34,200,000 5,500,000                                                
Maximum Leverage Ratio for Incremental Borrowings                 2.50                                            
Term Loan Quarterly Repayment, Percentage of Initial Balance                 1.25%                                            
Secured Debt, Prepayment Requirement, Duration to Reinvest Proceeds from Sale or Disposition of Certain Assets                 12 months                                            
Payments of Financing Costs                 7,200,000                                            
Deferred Finance Costs, Noncurrent, Net                 6,100,000                                           9,700,000
Gains (Losses) on Extinguishment of Debt                                                         1,100,000 1,700,000  
Debt Instrument, Face Amount                                                             $ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage                                                             4.75%
Percent of Notes Redeemable Before May 15, 2016 With Net Cash Proceeds From Certain Equity Offerings                                                             35.00%
Notes Redemption Price, Percent of Principal Amount                                                             100.00%
Registration Rights Agreement, Period to Consummate Exchange Offer                                                             365 days
Registration Rights Agreement, Failure to Consummate Exchange Offer, Annual Interest Rate Increase                                                             0.25%
Registration Rights Agreement, Failure to Consummate Exchange Offer, For Each Subsequent Default Period, Additional Increase in Annual Interest Rate                                                             0.25%
Registration Rights Agreement, Failure to Consummate Exchange Offer, Subsequent Default Period For Additional Incremental Increase in Annual Interest Rate                                                             90 days
Registration Rights Agreement, Failure to Consummate Exchange Offer, Maximum Additional Increase in Annual Interest Rate                                                             1.00%