v3.25.1
Goodwill and Other Intangible Assets - Schedule of Finite-Lived and Indefinite-Lived Intangible Assets (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Intangible assets subject to amortization:    
Gross Carrying Amount $ 1,623.7 $ 1,596.6
Accumulated Amortization (709.5) (686.1)
Net Carrying Amount 914.2 910.5
Intangible assets not subject to amortization:    
Intangible assets not subject to amortization 97.5 96.0
Gross intangible assets (excluding goodwill) 1,721.2 1,692.6
Accumulated Amortization (709.5) (686.1)
Total intangible assets, net carrying amount 1,011.7 1,006.5
Trade names    
Intangible assets not subject to amortization:    
Intangible assets not subject to amortization 88.8 87.3
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 821.5 805.7
Accumulated Amortization (274.8) (262.9)
Net Carrying Amount 546.7 542.8
Intangible assets not subject to amortization:    
Accumulated Amortization (274.8) (262.9)
Technology and know-how    
Intangible assets subject to amortization:    
Gross Carrying Amount 377.0 369.6
Accumulated Amortization (128.7) (120.4)
Net Carrying Amount 248.3 249.2
Intangible assets not subject to amortization:    
Accumulated Amortization (128.7) (120.4)
Trade names    
Intangible assets subject to amortization:    
Gross Carrying Amount 110.5 107.5
Accumulated Amortization (18.5) (16.9)
Net Carrying Amount 92.0 90.6
Intangible assets not subject to amortization:    
Accumulated Amortization (18.5) (16.9)
Capitalized software    
Intangible assets subject to amortization:    
Gross Carrying Amount 304.6 302.8
Accumulated Amortization (278.5) (276.1)
Net Carrying Amount 26.1 26.7
Intangible assets not subject to amortization:    
Accumulated Amortization (278.5) (276.1)
Other    
Intangible assets subject to amortization:    
Gross Carrying Amount 10.1 11.0
Accumulated Amortization (9.0) (9.8)
Net Carrying Amount 1.1 1.2
Intangible assets not subject to amortization:    
Accumulated Amortization $ (9.0) $ (9.8)