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Indebtedness - Additional Information (Details) - USD ($)
1 Months Ended 12 Months Ended
May 31, 2020
Jan. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Apr. 30, 2020
Sep. 15, 2015
Revolving Credit Facility            
Debt Instrument            
Senior unsecured revolving credit facility maximum borrowing capacity   $ 1,000,000,000        
Debt instrument, term   5 years        
Outstanding borrowings     $ 0      
Interest Expense | Interest rate swap            
Debt Instrument            
Gain (loss) on derivative instruments, net, pretax       $ 3,300,000    
2015 Senior Notes            
Debt Instrument            
Redemptions percentage of 2015 notes     100.00%      
Redemption percentage for change in control provision     101.00%      
Senior Notes | Interest Expense | Interest rate swap            
Debt Instrument            
Gain (loss) on derivative instruments, net, pretax       3,300,000    
Senior Notes | 2020 Senior Notes            
Debt Instrument            
Senior notes aggregate principal amount         $ 3,000,000,000  
Redemptions percentage of 2015 notes     100.00%      
Redemption percentage for change in control provision     101.00%      
Costs associated with the senior notes offerings     $ 24,400,000      
Senior Notes | 2.250% Senior Notes due May 1, 2030            
Debt Instrument            
Senior notes aggregate principal amount         $ 1,500,000,000  
Interest rate on senior notes     2.25%   2.25%  
Redemption percentage par value of senior notes         99.973%  
Senior Notes | 3.150% Senior Notes due May 1, 2050            
Debt Instrument            
Senior notes aggregate principal amount         $ 1,500,000,000  
Interest rate on senior notes     3.15%   3.15%  
Redemption percentage par value of senior notes         99.174%  
Senior Notes | 2015 Senior Notes            
Debt Instrument            
Costs associated with the senior notes offerings     $ 47,500,000      
Senior Notes | 3.625% Senior Notes due September 15, 2022            
Debt Instrument            
Senior notes aggregate principal amount     $ 1,000,000,000      
Interest rate on senior notes     3.625%      
Redemption percentage par value of senior notes     99.92%      
Senior Notes | 4.050% Senior Notes due September 15, 2025            
Debt Instrument            
Senior notes aggregate principal amount     $ 1,750,000,000      
Interest rate on senior notes     4.05%      
Redemption percentage par value of senior notes     99.764%      
Senior Notes | 5.200% Senior Notes due September 15, 2045            
Debt Instrument            
Senior notes aggregate principal amount     $ 1,120,000,000      
Interest rate on senior notes     5.20%      
Redemption percentage par value of senior notes     99.294%      
Senior Notes | 2.900% Senior Notes due September 15, 2020            
Debt Instrument            
Senior notes aggregate principal amount           $ 1,500,000,000
Interest rate on senior notes     2.90%      
Redemption percentage par value of senior notes           99.792%
Pre-tax charge       $ 12,700,000    
Senior Notes | 2.900% Senior Notes due September 15, 2020 | Interest Expense            
Debt Instrument            
Pre-tax charge $ 9,400,000