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Debt (Tables)
3 Months Ended
Mar. 31, 2022
Debt Disclosure [Abstract]  
Summary of Issued Senior Unsecured Notes Long-term debt in connection with our senior unsecured notes (collectively, the "Notes"), net of underwriting discounts and offering expenses, consists of the following:
March 31,December 31,
(In millions)20222021
1.750% Senior Notes due September 2030
$1,240.2 $1,239.9 
2.800% Senior Notes due September 2050
740.2 740.1 
$1,980.4 $1,980.0