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Debt-Textuals (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2021
Mar. 31, 2021
Nov. 28, 2021
Aug. 29, 2021
Aug. 23, 2020
Aug. 29, 2021
Aug. 23, 2020
Feb. 19, 2021
Jan. 05, 2021
Nov. 29, 2020
Debt Instruments [Line Items]                    
Payments to redeem debt           $ 800,000,000 $ 0      
Loss on early extinguishment of debt       $ 0 $ 0 $ 30,338,000 $ 0      
Weighted-average interest rate       4.12% 4.78% 4.34% 4.65%      
Senior Notes | 5.00% Senior Notes, Due 2025                    
Debt Instruments [Line Items]                    
Stated interest rate   5.00%   5.00%   5.00%        
Payments to redeem debt   $ 800,000,000                
Loss on early extinguishment of debt   30,100,000                
Call premium of retired debt   $ 20,000,000                
Senior Notes | 5.00% Senior Notes, Due 2025 | Forecast                    
Debt Instruments [Line Items]                    
Loss on early extinguishment of debt     $ 6,200,000              
Call premium of retired debt     $ 3,300,000              
Senior Notes | 5.00% Senior Notes, Due 2025 | Subsequent Event                    
Debt Instruments [Line Items]                    
Extinguishment of debt $ 200,000,000                  
Senior Notes | 3.50% Senior Notes Due 2031                    
Debt Instruments [Line Items]                    
Aggregate principal amount               $ 500,000,000    
Stated interest rate       3.50%   3.50%        
Unamortized Debt Issuance Expense       $ 7,400,000   $ 7,400,000        
Debt covenant, repurchase of debt           101.00%        
Senior Notes | 3.50% Senior Notes Due 2031 | Debt Instrument, Redemption, Period One                    
Debt Instruments [Line Items]                    
Maximum percent of principle amount that can be redeemed           40.00%        
Redemption price           103.50%        
Senior Notes | 3.50% Senior Notes Due 2031 | Debt Instrument, Redemption, Period Two                    
Debt Instruments [Line Items]                    
Redemption price           100.00%        
Senior revolving credit facility                    
Debt Instruments [Line Items]                    
Letter of credit limit       716,400,000   $ 716,400,000        
Letters of credit and other credit usage       12,400,000   12,400,000        
Total availability       $ 728,800,000   $ 728,800,000        
Senior revolving credit facility | Secured Debt                    
Debt Instruments [Line Items]                    
Letter of credit limit                 $ 150,000,000 $ 350,000,000
Debt issuance costs                 $ 3,400,000