Changes in Estimates (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2023	Sep. 29, 2022	Sep. 28, 2023	Sep. 29, 2022
Change In Estimate [Line Items]
Changes in Contract Estimates, aggregate, Affecting earnings from Continuing Operations, per Share diluted	$ (1.57)	$ (0.55)	$ (3.48)	$ (1.66)
Change In Accounting Estimate, aggregate	$ (165.1)	$ (54.0)	$ (365.2)	$ (162.8)
Cost of Goods and Services Sold	1,492.5	1,194.0	4,320.2	3,611.4
Cumulative catch-up adjustment [Member]
Change In Estimate [Line Items]
Change in Accounting Estimate - Contract Accounting	(64.0)	(4.9)	(49.4)	(26.2)
Forward Loss [Member]
Change In Estimate [Line Items]
Change in Accounting Estimate - Contract Accounting	(101.1)	(49.1)	(315.8)	(136.6)
Commercial Segment [Member] | Cost of Sales | Russia and Ukraine Conflict
Change In Estimate [Line Items]
Cost of Goods and Services Sold				23.9
Commercial Segment [Member] | Cumulative catch-up adjustment [Member]
Change In Estimate [Line Items]
Change in Accounting Estimate - Contract Accounting	(59.1)	(6.9)	(40.7)	(27.8)
Commercial Segment [Member] | Forward Loss [Member]
Change In Estimate [Line Items]
Change in Accounting Estimate - Contract Accounting	(86.5)	(47.4)	(298.3)	(132.6)
Defense & Space Segment [Member] | Cumulative catch-up adjustment [Member]
Change In Estimate [Line Items]
Change in Accounting Estimate - Contract Accounting	(4.9)	2.0	(8.7)	1.6
Defense & Space Segment [Member] | Forward Loss [Member]
Change In Estimate [Line Items]
Change in Accounting Estimate - Contract Accounting	(14.6)	(1.7)	(17.5)	(4.0)
Aftermarket Segment [Member] | Cost of Sales | Russia and Ukraine Conflict
Change In Estimate [Line Items]
Cost of Goods and Services Sold				4.2
Aftermarket Segment [Member] | Cumulative catch-up adjustment [Member]
Change In Estimate [Line Items]
Change in Accounting Estimate - Contract Accounting	0.0	0.0	0.0	0.0
Aftermarket Segment [Member] | Forward Loss [Member]
Change In Estimate [Line Items]
Change in Accounting Estimate - Contract Accounting	$ 0.0	$ 0.0	$ 0.0	$ 0.0