v3.24.1.u1
Other Assets (Details) - USD ($)
$ in Millions
Mar. 28, 2024
Dec. 31, 2023
Mar. 30, 2023
Dec. 31, 2022
Other Assets [Line Items]        
Intangible Assets, Gross (Excluding Goodwill) $ 245.5 $ 245.5    
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year 11.5      
Finite-Lived Intangible Asset, Expected Amortization, Year One 15.2      
Finite-Lived Intangible Asset, Expected Amortization, Year Two 15.2      
Finite-Lived Intangible Asset, Expected Amortization, Year Three 15.2      
Finite-Lived Intangible Asset, Expected Amortization, Year Four 15.2      
Finite-Lived Intangible Asset, Expected Amortization, Year Five $ 14.8      
Finite-Lived Intangible Assets, Remaining Amortization Period 13 years 1 month 6 days      
Intangible assets        
Deferred financing costs, net $ 0.0 0.0    
Goodwill 631.2 631.2    
Equity in net assets of affiliates 0.7 0.8    
Customer Supply Agreement 2.4 3.5    
Restricted Cash, Noncurrent 27.7 22.3 $ 22.1 $ 19.6
Rotable assets 45.4 44.0    
Other 30.1 29.3    
Total other long-term assets 106.3 99.9    
Prepaid Expense, Current 46.6 34.8    
Income Taxes Receivable, Current 2.6 5.3    
Other Assets, Miscellaneous, Current 7.7 12.4    
Intangible Assets, Net (Excluding Goodwill) 192.4 196.2    
Other Assets, Current 56.9 52.5    
Patents [Member]        
Other Assets [Line Items]        
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year 6.2      
Finite-Lived Intangible Asset, Expected Amortization, Year One 8.2      
Finite-Lived Intangible Asset, Expected Amortization, Year Two 8.2      
Finite-Lived Intangible Asset, Expected Amortization, Year Three 8.2      
Finite-Lived Intangible Asset, Expected Amortization, Year Four 8.2      
Finite-Lived Intangible Asset, Expected Amortization, Year Five $ 7.8      
Finite-Lived Intangible Assets, Remaining Amortization Period 14 years 2 months 12 days      
Favorable Leasehold [Member]        
Other Assets [Line Items]        
Intangible Assets, Gross (Excluding Goodwill) $ 2.8 2.8    
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year 0.1      
Finite-Lived Intangible Asset, Expected Amortization, Year One 0.1      
Finite-Lived Intangible Asset, Expected Amortization, Year Two 0.1      
Finite-Lived Intangible Asset, Expected Amortization, Year Three 0.1      
Finite-Lived Intangible Asset, Expected Amortization, Year Four 0.1      
Finite-Lived Intangible Asset, Expected Amortization, Year Five $ 0.1      
Finite-Lived Intangible Assets, Remaining Amortization Period 5 years 3 months 18 days      
Intangible assets        
Less: Accumulated amortization $ (2.2) (2.1)    
Debt issuance costs [Member]        
Intangible assets        
Deferred financing costs 0.9 0.9    
Less: Accumulated amortization-deferred financing costs (0.9) (0.9)    
Developed Technology [Member]        
Other Assets [Line Items]        
Intangible Assets, Gross (Excluding Goodwill) 103.1 103.1    
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year 5.2      
Finite-Lived Intangible Asset, Expected Amortization, Year One 6.9      
Finite-Lived Intangible Asset, Expected Amortization, Year Two 6.9      
Finite-Lived Intangible Asset, Expected Amortization, Year Three 6.9      
Finite-Lived Intangible Asset, Expected Amortization, Year Four 6.9      
Finite-Lived Intangible Asset, Expected Amortization, Year Five $ 6.9      
Finite-Lived Intangible Assets, Remaining Amortization Period 11 years 7 months 6 days      
Intangible assets        
Less: Accumulated amortization $ (23.6) (21.9)    
Customer Relationships        
Other Assets [Line Items]        
Intangible Assets, Gross (Excluding Goodwill) 139.6 139.6    
Intangible assets        
Less: Accumulated amortization $ (27.3) $ (25.3)