Revenue (Tables) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Oct. 01, 2020	Sep. 30, 2021	Oct. 01, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 980.0	$ 806.3	$ 2,882.9	$ 2,528.2
Boeing [Member]
Disaggregation of Revenue [Line Items]
Revenues	566.1	493.8	1,595.8	1,539.9
Airbus [Member]
Disaggregation of Revenue [Line Items]
Revenues	211.6	160.1	687.8	575.3
Other Customer [Member]
Disaggregation of Revenue [Line Items]
Revenues	202.3	152.4	599.3	413.0
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	715.5	642.0	2,048.1	1,936.4
UNITED KINGDOM
Disaggregation of Revenue [Line Items]
Revenues	142.5	103.6	419.8	358.2
Other International [Member]
Disaggregation of Revenue [Line Items]
Revenues	122.0	60.7	415.0	233.6
Total International [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 264.5	$ 164.3	$ 834.8	$ 591.8