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Borrowing Arrangements - Additional Information (Details)
1 Months Ended 9 Months Ended
Oct. 31, 2021
USD ($)
Sep. 30, 2021
USD ($)
Jan. 31, 2020
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2015
USD ($)
Dec. 31, 2012
USD ($)
Oct. 31, 2021
USD ($)
Debt Instrument [Line Items]              
Maximum borrowing capacity   $ 1,500,000,000          
Senior Notes              
Debt Instrument [Line Items]              
Debt redemption percentage of principle amount (in percentage)             101.00%
2021 Notes | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount $ 1,000,000,000           $ 1,000,000,000
Stated interest rate (in percentage) 2.40%           2.40%
Unamortized discount $ 3,000,000           $ 3,000,000
Debt issuance costs 9,200,000           9,200,000
Proceeds from debt, net of issuance costs 987,800,000            
The Credit Agreement | Revolving Credit Facility              
Debt Instrument [Line Items]              
Maximum borrowing capacity   1,500,000,000          
Line of credit facility, increase limit   $ 2,000,000,000          
Debt covenant, interest coverage ratio, minimum   3.50          
Debt covenant, leverage ratio, maximum   4.00          
Line of credit facility, outstanding borrowings 0           $ 0
The Credit Agreement | Revolving Credit Facility | Minimum | Base Rate              
Debt Instrument [Line Items]              
Basis spread on variable rate (in percentage)             0.00%
The Credit Agreement | Revolving Credit Facility | Minimum | London Interbank Offered Rate (LIBOR)              
Debt Instrument [Line Items]              
Basis spread on variable rate (in percentage)             0.785%
The Credit Agreement | Revolving Credit Facility | Maximum | Base Rate              
Debt Instrument [Line Items]              
Basis spread on variable rate (in percentage)             0.375%
The Credit Agreement | Revolving Credit Facility | Maximum | London Interbank Offered Rate (LIBOR)              
Debt Instrument [Line Items]              
Basis spread on variable rate (in percentage)             1.375%
The Credit Agreement of December 17, 2018 | Revolving Credit Facility              
Debt Instrument [Line Items]              
Line of credit facility, increase limit   $ 1,000,000,000          
Extinguishment of debt   $ 650,000,000          
2020 Notes | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount 500,000,000.0   $ 500,000,000       $ 500,000,000.0
Stated interest rate (in percentage)     2.85%        
Unamortized discount     $ 1,100,000        
Debt issuance costs     4,800,000        
Proceeds from debt, net of issuance costs     494,100,000        
2015 Notes | Senior Notes              
Debt Instrument [Line Items]              
Repayments of debt     $ 450,000,000        
2017 Notes due in 2027 | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount       $ 500,000,000      
Stated interest rate (in percentage)       3.50%      
Unamortized discount       $ 3,100,000      
Debt issuance costs       4,900,000      
Proceeds from debt, net of issuance costs       492,000,000      
2017 Notes | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount 500,000,000.0           500,000,000.0
Repayments of debt       $ 400,000,000      
2015 Notes | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount 300,000,000.0       $ 300,000,000   300,000,000.0
Stated interest rate (in percentage)         4.375%    
Unamortized discount         $ 1,100,000    
Debt issuance costs         2,500,000    
Proceeds from debt, net of issuance costs         $ 296,400,000    
2012 Notes | Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount $ 350,000,000.0         $ 350,000,000 $ 350,000,000.0
Stated interest rate (in percentage)           3.60%  
Unamortized discount           $ 500,000  
Debt issuance costs           2,800,000  
Proceeds from debt, net of issuance costs           $ 346,700,000