Revenue - Schedule of Revenue by Market (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Consolidated Net Sales	$ 320.3	$ 378.7	$ 630.6	$ 919.7
Commercial Aerospace
Disaggregation Of Revenue [Line Items]
Consolidated Net Sales	153.7	203.9	301.3	566.8
Space & Defense
Disaggregation Of Revenue [Line Items]
Consolidated Net Sales	106.9	108.4	218.6	220.0
Industrial
Disaggregation Of Revenue [Line Items]
Consolidated Net Sales	$ 59.7	$ 66.4	$ 110.7	$ 132.9