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Operating Segments and Related Disclosures (Tables)
12 Months Ended
Dec. 31, 2024
Segment Reporting [Abstract]  
Schedule of Operating Revenues by Geographic Region Operating revenues by geographic region as defined by the Department of Transportation ("DOT") area are summarized below:
202420232022
(in millions)
DOT—Domestic$4,358.2 $4,676.1 $4,371.8 
DOT—Latin America and Caribbean555.2 686.4 696.6 
Total$4,913.4 $5,362.5 $5,068.4