Acquisitions and Discontinued Operations - Wind-Down of DBT - Narrative (Details) - USD ($) $ in Millions	3 Months Ended										12 Months Ended
	Dec. 31, 2021	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Dec. 31, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Jun. 29, 2019	Mar. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Discontinued Operations
Gain (loss) on disposition of discontinued operations, net of tax											$ 360.7	$ (3.7)	$ (4.4)
Revenues	$ (350.0)	$ (285.7)	$ (296.6)	$ (287.2)	$ (348.3)	$ (267.8)	$ (257.3)	$ (254.7)			(1,219.5)	(1,128.1)	(1,123.6)
South Africa | Revisions in estimates for large power projects | Other Segments | Large power projects
Discontinued Operations
Revenues													23.5
Operating Segments
Discontinued Operations
Revenues											(1,219.5)	$ (1,128.1)	$ (1,123.6)
Operating Segments | South Africa | Revisions in estimates for large power projects | Other Segments | Large power projects
Discontinued Operations
Revenues									$ 6.0	$ 17.5
DBT | Discontinued operations
Discontinued Operations
Gain (loss) on disposition of discontinued operations, net of tax											$ (19.9)