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Long-Term Debt - Additional Information (Details)
$ in Thousands, € in Millions
2 Months Ended 3 Months Ended 12 Months Ended
Jun. 21, 2018
USD ($)
Oct. 15, 2014
USD ($)
Feb. 28, 2017
USD ($)
Mar. 31, 2017
USD ($)
Mar. 31, 2017
EUR (€)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Sep. 14, 2015
USD ($)
Dec. 22, 2014
USD ($)
Dec. 18, 2014
Dec. 08, 2014
EUR (€)
Nov. 24, 2014
USD ($)
Jan. 22, 2014
USD ($)
payment
May 29, 2013
USD ($)
Dec. 10, 2010
USD ($)
Debt Instrument [Line Items]                                
Aggregate annual maturities of long-term debt, 2019           $ 307,300                    
Aggregate annual maturities of long-term debt, 2020           175,300                    
Aggregate annual maturities of long-term debt, 2021           447,000                    
Aggregate annual maturities of long-term debt, 2022           0                    
Aggregate annual maturities of long-term debt, 2023           7,200                    
Aggregate annual maturities of long-term debt, thereafter           778,700                    
Repayments of long-term debt           0 $ 778,209 $ 1,252,302                
Repayments of debt premium       $ 45,200                        
Loss on early extinguishment of debt           0 $ 52,801 1,921                
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months           3,300                    
Revolving credit facility, remaining borrowings available           $ 693,400                    
September 2015 Term Loan Agreement                                
Debt Instrument [Line Items]                                
Principal amount of debt                 $ 1,250,000              
Repayments of long-term debt               1,250,000                
1.875% Senior Notes                                
Debt Instrument [Line Items]                                
Principal amount of debt | €                       € 700.0        
Debt instrument, interest rate       1.875% 1.875% 1.875% 1.875%       1.875% 1.875%        
Interest rate of debt, effective percentage                       2.10%        
Other comprehensive (loss) income before reclassifications, before tax           $ 25,800 $ (41,800) $ 26,100                
3.00% Senior Notes                                
Debt Instrument [Line Items]                                
Principal amount of debt                         $ 250,000      
Debt instrument, interest rate       3.00% 3.00% 3.00% 3.00%           3.00%      
Interest rate of debt, effective percentage                         3.18%      
4.15% Senior Notes                                
Debt Instrument [Line Items]                                
Principal amount of debt                         $ 425,000      
Debt instrument, interest rate           4.15% 4.15%           4.15%      
Interest rate of debt, effective percentage                         5.06%      
Number of semi annual coupon payments | payment                           20    
4.50% Senior Notes                                
Debt Instrument [Line Items]                                
Principal amount of debt                               $ 350,000
Debt instrument, interest rate       4.50% 4.50% 4.50% 4.50%                 4.50%
Interest rate of debt, effective percentage                               4.70%
5.45% Senior Notes                                
Debt Instrument [Line Items]                                
Principal amount of debt                         $ 350,000      
Debt instrument, interest rate           5.45% 5.45%           5.45%      
Interest rate of debt, effective percentage                         5.50%      
Commercial Paper                                
Debt Instrument [Line Items]                                
Repayments of long-term debt           $ 114,700                    
Commercial paper notes           $ 306,600                    
Weighted-average interest rate           2.91%                    
Debt instrument weighted average maturity period           38 days                    
Line of Credit                                
Debt Instrument [Line Items]                                
Revolving credit facility, maximum borrowing capacity           $ 263,000                    
Borrowings outstanding under credit facility           $ 7,200 $ 5,300                  
Average interest rate on borrowings           0.69% 1.26% 0.94%                
Domestic Financial Institution Agreement [Member]                                
Debt Instrument [Line Items]                                
Borrowings outstanding under credit facility           $ 0 $ 0                  
Foreign Credit Line U S Dollar Euro Denominated Borrowings [Member]                                
Debt Instrument [Line Items]                                
Borrowings outstanding under credit facility           0 0                  
Other Foreign Credit Lines [Member]                                
Debt Instrument [Line Items]                                
Borrowings outstanding under credit facility           $ 0 $ 0                  
Maximum | Commercial Paper                                
Debt Instrument [Line Items]                                
Commercial paper notes                             $ 750,000  
Debt instrument, maturity term           397 days                    
Revolving Credit Facility                                
Debt Instrument [Line Items]                                
Interest rate margin           1.125%                    
Revolving credit facility, maximum borrowing capacity $ 1,000,000                 $ 1,000,000            
Debt covenant ratio, maximum debt to EBITDA 3.50                              
Debt covenant 50000000000.00%                              
Revolving Credit Facility | Minimum                                
Debt Instrument [Line Items]                                
Interest rate margin 0.91%                              
Revolving Credit Facility | Maximum                                
Debt Instrument [Line Items]                                
Interest rate margin 1.50%                              
Interest Rate Swap | JP Morgan                                
Debt Instrument [Line Items]                                
Derivative, notional amount                           $ 325,000    
Payment for settlement of interest rate swap   $ 33,400                            
Senior Notes | 1.875% Senior Notes                                
Debt Instrument [Line Items]                                
Repayments of long-term debt | €         € 307.0                      
Senior Notes | 3.00% Senior Notes                                
Debt Instrument [Line Items]                                
Repayments of long-term debt     $ 250,000                          
Senior Notes | 4.50% Senior Notes                                
Debt Instrument [Line Items]                                
Repayments of long-term debt       $ 174,700                        
London Interbank Offered Rate (LIBOR) | September 2015 Term Loan Agreement                                
Debt Instrument [Line Items]                                
Interest rate margin           1.375%