Debt (Details) (USD $)
3 Months Ended 0 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Jul. 02, 2012
Jul. 02, 2012
Revolving Credit Facility [Member]
Jul. 02, 2012
Term Loan Facility [Member]
Mar. 31, 2014
Term Loan Facility [Member]
Mar. 31, 2014
Secured Debt [Member]
Revolving Credit Facility [Member]
Mar. 31, 2014
Secured Debt [Member]
Revolving Credit Facility [Member]
Dec. 31, 2013
Secured Debt [Member]
Revolving Credit Facility [Member]
Mar. 31, 2014
Secured Debt [Member]
Term Loan Facility [Member]
Dec. 31, 2013
Secured Debt [Member]
Term Loan Facility [Member]
Mar. 31, 2014
4.75% Senior Notes [Member]
Mar. 31, 2014
4.75% Senior Notes [Member]
Dec. 31, 2013
4.75% Senior Notes [Member]
Mar. 31, 2014
Federal Funds Rate [Member]
Revolving Credit Facility [Member]
Mar. 31, 2014
Federal Funds Rate [Member]
Term Loan Facility [Member]
Mar. 31, 2014
LIBOR [Member]
Revolving Credit Facility [Member]
Mar. 31, 2014
LIBOR [Member]
Term Loan Facility [Member]
Mar. 31, 2014
Amended Credit Agreement [Member]
Revolving Credit Facility [Member]
Jan. 31, 2014
Amended Credit Agreement [Member]
Term Loan Facility [Member]
Mar. 31, 2014
Amended Credit Agreement [Member]
Term Loan Facility [Member]
Mar. 31, 2014
Debt Instrument, Redemption, Period One [Member]
4.75% Senior Notes [Member]
Mar. 31, 2014
Debt Instrument, Redemption, Period One [Member]
Minimum [Member]
4.75% Senior Notes [Member]
Mar. 31, 2014
Debt Instrument, Redemption, Period One [Member]
Maximum [Member]
4.75% Senior Notes [Member]
Mar. 31, 2014
Financial guarantee
4.75% Senior Notes [Member]
Line of Credit Facility [Line Items]                                                    
Stated interest rate                         4.75% 4.75%                        
Long-term Debt, by Category, Current and Noncurrent [Abstract]                                                    
Long-term debt             $ 981,250,000 $ 0 $ 0 $ 300,000,000 $ 960,366,000 $ 965,363,000 $ 492,545,000 $ 492,545,000 $ 0             $ 981,300,000        
Less current maturities (56,250,000)   (50,000,000)                                              
Long-term debt 1,396,661,000   1,215,363,000                                              
Debt amount       1,800,000,000.0 800,000,000 1,000,000,000             500,000,000 500,000,000                        
Proceeds from issuance of debt                         492,500,000                          
Debt discount                         7,500,000 7,500,000                        
Debt issuance cost paid                         1,800,000                          
Repayments of Long-term Lines of Credit               300,000,000                       300,000,000 6,300,000          
Amortization of financing costs and debt discounts                           100,000                        
Trigger amount for redemption of debt                                                   175,000,000
Redemption period                                               30 days 60 days  
Redemption price, percentage of principle amount redeemable                                             100.00%      
Redemption price, percentage                                             101.00%      
Percentage of aggregate amount of debt required to make note due and payable immediately                                             25.00%      
Term of long-term debt         5 years 5 years                                        
Line of credit, remaining borrowing capacity                                       800,000,000            
Amortization related to financing costs and debt discounts $ 2,100,000 $ 2,500,000                                                
Initial applicable margin for borrowings                               0.50% 0.50% 1.00% 1.00%       0.50%      
Interest rate during period             1.81%   1.81% 1.81% 1.81% 1.81%