Other Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Apr. 01, 2021	Dec. 31, 2020
Other Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 232.0	$ 232.0
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year	10.6
Finite-Lived Intangible Asset, Expected Amortization, Year Two	14.3
Finite-Lived Intangible Asset, Expected Amortization, Year Three	14.3
Finite-Lived Intangible Asset, Expected Amortization, Year Four	14.3
Finite-Lived Intangible Asset, Expected Amortization, Year Five	14.3
Finite-Lived Intangible Assets, Amortization Expense, Year Six	$ 14.3
Finite-Lived Intangible Assets, Remaining Amortization Period	15 years
Intangible assets
Deferred financing costs, net	$ 0.3	0.3
Goodwill	623.6	623.7
Equity in net assets of affiliates	0.4	0.8
Customer Supply Agreement	8.3	9.2
Restricted Cash, Noncurrent	19.5	19.5	$ 19.5	$ 19.5
Rotables	39.4	38.3
Other	26.5	23.5
Total other long term assets	94.4	91.6
Prepaid Expense, Current	31.3	20.7
Income Taxes Receivable, Current	2.2	14.0
Other Assets, Miscellaneous, Current	7.6	5.0
Intangible Assets, Net (Excluding Goodwill)	208.6	212.3
Other Assets, Current	41.1	39.7
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 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, Amortization Expense, Year Six	$ 0.1
Finite-Lived Intangible Assets, Remaining Amortization Period	7 years 3 months 18 days
Intangible assets
Less: Accumulated amortization	$ (1.9)	(1.9)
Debt issuance costs [Member]
Intangible assets
Deferred financing costs	0.9	0.9
Less: Accumulated amortization-deferred financing costs	(0.6)	(0.6)
Developed Technology [Member]
Other Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	92.0	92.0
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year	4.5
Finite-Lived Intangible Asset, Expected Amortization, Year Two	6.1
Finite-Lived Intangible Asset, Expected Amortization, Year Three	6.1
Finite-Lived Intangible Asset, Expected Amortization, Year Four	6.1
Finite-Lived Intangible Asset, Expected Amortization, Year Five	6.1
Finite-Lived Intangible Assets, Amortization Expense, Year Six	$ 6.1
Finite-Lived Intangible Assets, Remaining Amortization Period	13 years 3 months 18 days
Intangible assets
Less: Accumulated amortization	$ (10.4)	(8.8)
Customer Relationships
Other Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	137.2	137.2
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year	6.0
Finite-Lived Intangible Asset, Expected Amortization, Year Two	8.1
Finite-Lived Intangible Asset, Expected Amortization, Year Three	8.1
Finite-Lived Intangible Asset, Expected Amortization, Year Four	8.1
Finite-Lived Intangible Asset, Expected Amortization, Year Five	8.1
Finite-Lived Intangible Assets, Amortization Expense, Year Six	$ 8.1
Finite-Lived Intangible Assets, Remaining Amortization Period	16 years 2 months 12 days
Intangible assets
Less: Accumulated amortization	$ (11.1)	$ (9.0)