Acquisition (Details) - USD ($)	3 Months Ended
	Apr. 02, 2020	Mar. 28, 2019	Dec. 31, 2019
Business Acquisition [Line Items]
Revenues	$ 1,077,300,000	$ 1,967,800,000
Net Income (Loss) Attributable to Parent	$ (163,000,000.0)	$ 163,100,000
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Goodwill	$ 78,500,000		$ 2,400,000
Weighted Average Amortization Period Intangible Assets	P14Y9M18D
Earnings Per Share, Diluted	$ (1.57)	$ 1.55
FMI [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Net Income (Loss)	$ (162,900,000)	$ 163,000,000.0
Business Acquisition, Pro Forma Revenue	1,078,100,000	$ 1,975,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	3,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	$ 5,300,000
Business Acquisition, Effective Date of Acquisition	Jan. 10, 2020
Business Acquisition, Name of Acquired Entity	Fiber Materials Inc. (FMI)
Business Combination, Consideration Transferred	$ 121,600,000
Business Combination, Reason for Business Combination	Acquiring FMI aligns with the Company's strategic growth objectives to diversify its customer base and expand the current defense business.
Business Acquisition, Description of Acquired Entity	Founded in 1969 and headquartered in Biddeford, ME, FMI is an industry-leader in the design and manufacture of complex composite solutions that are primarily used in aerospace applications. Over the past 50 years, FMI has developed a portfolio related to its high temperature composites. FMI's main operations focus on multidirectional reinforced composites that enable high-temperature applications such as thermal protection systems, re-entry vehicle nose tips, and rocket motor throats and nozzles. Their unique capabilities have positioned them as a leader in 3D woven carbon-carbon high-temperature materials for hypersonic missiles, which the Department of Defense has identified as a national priority.
cumulative transaction costs	$ 1,500,000
Business Acquisition, Transaction Costs	500,000
Goodwill	76,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	5,300,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	10,700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	1,900,000
business combination, recognized identifiable assets liabilities assumed, contract assets	5,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	12,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	30,000,000.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	135,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	1,800,000
business combination, recognized identifiable assets acquired and liabilities assumed, income tax payable	1,400,000
business combination, recognized identifiable assets acquired and liabilities assumed, contract liabilities	2,200,000
business combination, recognized identifiable assets acquired and liabilities assumed, accrued payroll and benefits	600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other	200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	7,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	13,900,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 121,600,000
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ (1.57)	$ 1.55
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 1,200,000
Asco [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs	11,000,000.0	$ 2,800,000
Bombardier [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs	1,000,000.0
Technology-Based Intangible Assets [Member] | FMI [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 30,000,000.0
Weighted Average Amortization Period Intangible Assets	15
Fuselage Systems [Member]
Business Acquisition [Line Items]
Revenues	$ 551,500,000	1,069,600,000
Fuselage Systems [Member] | FMI [Member]
Business Acquisition [Line Items]
Goodwill	43,000,000.0
Propulsion Systems [Member]
Business Acquisition [Line Items]
Revenues	225,200,000	$ 485,700,000
Propulsion Systems [Member] | FMI [Member]
Business Acquisition [Line Items]
Goodwill	$ 33,200,000