Segment Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jul. 01, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jul. 01, 2021 USD ($)
Segment Reporting Information [Line Items]
Restructuring Charges	$ 0.0	$ 5.2	$ 0.2	$ 7.3
Excess Capacity Costs- B737MAX and A320 Production Schedules	44.9		94.7
Abnormal Costs- COVID19 production suspension	0.0		9.5
Cost of Goods and Services Sold	1,277.5	1,014.4	2,417.4	1,973.2
Segment Revenues
Segment Revenues	1,257.9	1,002.1	2,432.6	1,902.9
Segment Operating Income
Business Segment Operating Income	(19.6)	(17.5)	15.0	(77.6)
Segment Information Unallocated Corporate Selling General And Administrative	(70.2)	(66.9)	(134.7)	(124.5)
Segment Information Unallocated Research And Development	(14.9)	(13.3)	(27.2)	(21.5)
Operating loss	$ (104.7)	(97.7)	$ (146.9)	(223.6)
Segment Reporting Information, Additional Information [Abstract]
Number Of Principal Segments | segment			3
Percentage Of Net Revenue Derived From Two Largest Customers	83.00%		82.00%
Cost of Sales | Russia and Ukraine Conflict
Segment Reporting Information [Line Items]
Cost of Goods and Services Sold			$ 28.1
Commercial Segment [Member]
Segment Revenues
Segment Revenues	$ 1,031.1	803.6	1,969.5	1,499.7
Segment Operating Income
Business Segment Operating Income	(45.1)	(44.7)	$ (48.5)	(127.6)
Segment Reporting Information, Additional Information [Abstract]
Segment Reporting, Disclosure of Major Customers			Approximately 62% and 58% of Commercial segment net revenues came from the Company's contracts with Boeing for the six months ended June 30, 2022, and July 1, 2021, respectively. Approximately 30% and 32% of Commercial segment net revenues came from the Company's contracts with Airbus for the six months ended June 30, 2022, and July 1, 2021, respectively.
Commercial Segment [Member] | Cost of Sales | Russia and Ukraine Conflict
Segment Reporting Information [Line Items]
Cost of Goods and Services Sold			$ 23.9
Defense & Space Segment [Member]
Segment Revenues
Segment Revenues	146.4	141.8	304.9	295.2
Segment Operating Income
Business Segment Operating Income	13.7	12.4	$ 33.7	24.4
Segment Reporting Information, Additional Information [Abstract]
Segment Reporting, Disclosure of Major Customers			A significant portion of Defense & Space segment net revenues came from the Company's contracts with two individual customers for the six months ended June 30, 2022, and July 1, 2021.
Aftermarket Segment [Member]
Segment Revenues
Segment Revenues	80.4	56.7	$ 158.2	108.0
Segment Operating Income
Business Segment Operating Income	$ 11.8	$ 14.8	$ 29.8	$ 25.6
Segment Reporting Information, Additional Information [Abstract]
Segment Reporting, Disclosure of Major Customers			Approximately 47% and 45% of Aftermarket segment net revenues came from the Company's contracts with a single customer for the six months ended June 30, 2022, and July 1, 2021, respectively.
Aftermarket Segment [Member] | Cost of Sales | Russia and Ukraine Conflict
Segment Reporting Information [Line Items]
Cost of Goods and Services Sold			$ 4.2