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Goodwill and Other Intangible Assets - Schedule of Finite-Lived and Indefinite-Lived Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Intangible assets subject to amortization:    
Gross Carrying Amount $ 1,596.6 $ 1,501.4
Accumulated Amortization (686.1) (616.4)
Net Carrying Amount 910.5 885.0
Intangible assets not subject to amortization:    
Intangible assets not subject to amortization 96.0 146.4
Gross intangible assets (excluding goodwill) 1,692.6 1,647.8
Accumulated Amortization (686.1) (616.4)
Total intangible assets, net carrying amount 1,006.5 1,031.4
Trade names    
Intangible assets not subject to amortization:    
Intangible assets not subject to amortization 87.3 137.7
FAA air agency certificates    
Intangible assets not subject to amortization:    
Intangible assets not subject to amortization 8.7 8.7
Customer relationships    
Intangible assets subject to amortization:    
Gross Carrying Amount 805.7 776.5
Accumulated Amortization (262.9) (222.8)
Net Carrying Amount 542.8 553.7
Intangible assets not subject to amortization:    
Accumulated Amortization (262.9) (222.8)
Technology and know-how    
Intangible assets subject to amortization:    
Gross Carrying Amount 369.6 343.3
Accumulated Amortization (120.4) (100.9)
Net Carrying Amount 249.2 242.4
Intangible assets not subject to amortization:    
Accumulated Amortization (120.4) (100.9)
Trade names    
Intangible assets subject to amortization:    
Gross Carrying Amount 107.5 71.3
Accumulated Amortization (16.9) (11.2)
Net Carrying Amount 90.6 60.1
Intangible assets not subject to amortization:    
Accumulated Amortization (16.9) (11.2)
Capitalized Software    
Intangible assets subject to amortization:    
Gross Carrying Amount 302.8 299.5
Accumulated Amortization (276.1) (272.8)
Net Carrying Amount 26.7 26.7
Intangible assets not subject to amortization:    
Accumulated Amortization (276.1) (272.8)
Other    
Intangible assets subject to amortization:    
Gross Carrying Amount 11.0 10.8
Accumulated Amortization (9.8) (8.7)
Net Carrying Amount 1.2 2.1
Intangible assets not subject to amortization:    
Accumulated Amortization $ (9.8) $ (8.7)