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INFORMATION BY OPERATING SEGMENTS AND GEOGRAPHIC AREA - Summary of Revenue by Geographic Area and Operating Segment (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment $ 7,577.5 $ 6,394.7 $ 5,268.5
North America      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 4,450.9 3,781.2 3,282.3
Europe      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 1,840.7 1,437.5 1,130.7
Asia Pacific      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 409.1 256.2 204.5
Latin America (except Brazil)      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 142.0 267.2 98.2
Brazil      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 630.2 531.4 453.7
Other      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 104.6 121.2 99.1
Operating Segments      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 7,577.5 6,394.7 5,268.5
Commercial Aviation | Operating Segments      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 2,369.8 2,208.6 1,846.8
Commercial Aviation | Operating Segments | North America      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 1,886.7 1,615.6 1,489.4
Commercial Aviation | Operating Segments | Europe      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 414.1 440.8 293.8
Commercial Aviation | Operating Segments | Asia Pacific      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 35.9 29.0 0.0
Commercial Aviation | Operating Segments | Latin America (except Brazil)      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 33.1 95.4 32.2
Commercial Aviation | Operating Segments | Brazil      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 0.0 0.3 4.2
Commercial Aviation | Operating Segments | Other      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 0.0 27.5 27.2
Defense & Security | Operating Segments      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 983.9 720.9 515.4
Defense & Security | Operating Segments | North America      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 14.6 0.1 1.0
Defense & Security | Operating Segments | Europe      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 623.6 384.6 304.9
Defense & Security | Operating Segments | Asia Pacific      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 204.5 60.2 67.1
Defense & Security | Operating Segments | Latin America (except Brazil)      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 24.8 81.2 0.0
Defense & Security | Operating Segments | Brazil      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 115.5 181.9 141.9
Defense & Security | Operating Segments | Other      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 0.9 12.9 0.5
Executive Aviation | Operating Segments      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 2,205.1 1,762.7 1,408.2
Executive Aviation | Operating Segments | North America      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 1,538.8 1,330.3 1,054.1
Executive Aviation | Operating Segments | Europe      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 299.2 204.1 226.9
Executive Aviation | Operating Segments | Asia Pacific      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 5.3 35.3 20.1
Executive Aviation | Operating Segments | Latin America (except Brazil)      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 30.1 36.7 21.4
Executive Aviation | Operating Segments | Brazil      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 320.5 156.3 85.7
Executive Aviation | Operating Segments | Other      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 11.2 0.0 0.0
Services & Support | Operating Segments      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 1,925.6 1,636.5 1,417.6
Services & Support | Operating Segments | North America      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 1,009.3 835.1 737.8
Services & Support | Operating Segments | Europe      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 481.3 408.0 305.1
Services & Support | Operating Segments | Asia Pacific      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 158.8 131.7 117.3
Services & Support | Operating Segments | Latin America (except Brazil)      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 54.0 53.9 44.6
Services & Support | Operating Segments | Brazil      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 129.7 127.0 141.4
Services & Support | Operating Segments | Other      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 92.5 80.8 71.4
Total reportable Segments | Operating Segments      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 7,484.4 6,328.7 5,188.0
Total reportable Segments | Operating Segments | North America      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 4,449.4 3,781.1 3,282.3
Total reportable Segments | Operating Segments | Europe      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 1,818.2 1,437.5 1,130.7
Total reportable Segments | Operating Segments | Asia Pacific      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 404.5 256.2 204.5
Total reportable Segments | Operating Segments | Latin America (except Brazil)      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 142.0 267.2 98.2
Total reportable Segments | Operating Segments | Brazil      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 565.7 465.5 373.2
Total reportable Segments | Operating Segments | Other      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 104.6 121.2 99.1
Other Segments      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 93.1 66.0 80.5
Other Segments | North America      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 1.5 0.1 0.0
Other Segments | Europe      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 22.5 0.0 0.0
Other Segments | Asia Pacific      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 4.6 0.0 0.0
Other Segments | Latin America (except Brazil)      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 0.0 0.0 0.0
Other Segments | Brazil      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 64.5 65.9 80.5
Other Segments | Other      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment 0.0 0.0 0.0
Other Segments | Operating Segments      
Disclosure of geographical areas [line items]      
Revenue by geographic area and operating segment $ 93.1 $ 66.0 $ 80.5