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Debt - Long-term Borrowings (Details) - USD ($)
1 Months Ended 12 Months Ended
Oct. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Nov. 30, 2021
Mar. 31, 2020
Aug. 31, 2019
Jun. 30, 2019
Debt Instrument [Line Items]                
Long-term debt maturing in 2022   $ 260,800,000            
Long-term debt maturing in 2023   900,000            
Long-term debt maturing in 2024   500,200,000            
Long-term debt maturing in 2025   650,100,000            
Long-term debt maturing in 2026   350,100,000            
Interest expense on long-term debt   320,400,000 $ 320,500,000 $ 321,300,000        
(Gain) loss on extinguishment of debt   $ (1,400,000) $ 21,300,000 $ 14,800,000        
Senior Notes | 2.20% Senior Notes Due March 2032                
Debt Instrument [Line Items]                
Long-term debt issued         $ 500,000,000      
Interest rate         2.20%      
Senior Notes | 2.90% Senior Notes Due March 2052                
Debt Instrument [Line Items]                
Long-term debt issued         $ 500,000,000      
Interest rate         2.90%      
Senior Notes | 4.20% Senior Notes Percent Due 2022                
Debt Instrument [Line Items]                
Interest rate 4.20%              
Debt instrument, repurchased face amount $ 400,000,000              
Debt instrument, redemption price, percentage 100.00%              
(Gain) loss on extinguishment of debt $ (1,400,000)              
Senior Notes | 2.30% Senior Notes Due May 2030                
Debt Instrument [Line Items]                
Long-term debt issued           $ 500,000,000    
Interest rate           2.30%    
Senior Notes | 3.30% Senior Notes Due May 2050                
Debt Instrument [Line Items]                
Long-term debt issued           $ 500,000,000    
Interest rate           3.30%    
Senior Notes | Senior Notes 2.75%, Due June 2022                
Debt Instrument [Line Items]                
Interest rate           2.75% 2.75%  
Debt repurchased             $ 490,000,000  
Senior Notes | 2.25% Senior Notes Due May 2020                
Debt Instrument [Line Items]                
Interest rate           2.25% 2.25% 2.25%
Debt repurchased             $ 1,010,000,000.00 $ 60,900,000
Senior Notes | 2.95% Senior Notes                
Debt Instrument [Line Items]                
Long-term debt issued             $ 800,000,000  
Interest rate   2.95%         2.95%  
Senior Notes | 3.80% Senior Notes                
Debt Instrument [Line Items]                
Long-term debt issued             $ 550,000,000  
Interest rate   3.80%         3.80%