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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Estimated Future Cash Outlays Related to Principal Contractual Obligations The estimated future cash outlays are as follows:
Year
Amount
(In millions)
2022$50.5 
202334.1 
202423.0 
202525.5 
20261.0 
Total$134.1