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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2023
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)
2024$100.8 
202522.3 
20269.0 
20273.2 
20280.3 
Total$135.6