Acquisitions and Discontinued Operations - Wind-Down of DBT (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) from discontinued operations, net of tax	$ 2.0	$ 316.4	$ 44.2	$ 3.8	$ 5.3	$ 3.1	$ 8.2	$ 8.6			$ 366.4	$ 25.2	$ (11.0)
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)
Operating Segments
Discontinued Operations
Revenues											(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
South Africa | Revisions in estimates for large power projects | Other Segments | Large power projects | Operating Segments
Discontinued Operations
Revenues									$ 6.0	$ 17.5
Discontinued operations
Discontinued Operations
Income from discontinued operations											409.2	35.8	(9.5)
Income tax (provision) benefit			$ (33.0)								(42.8)	(10.6)	(1.5)
Gain (loss) from discontinued operations, net of tax											366.4	25.2	(11.0)
Discontinued operations | DBT
Discontinued Operations
Revenues											0.5	4.0	(6.1)
Cost of products sold											0.9	6.9	22.4
Selling, general and administrative											15.1	14.8	11.6
Special charges											1.3	0.8	2.6
Other income, net											(1.2)	1.9	(0.6)
Interest income, net											0.1	0.0	0.2
Income from discontinued operations											(17.9)	(16.6)	(43.1)
Income tax (provision) benefit											2.7	2.4	7.3
Gain (loss) from discontinued operations, net of tax											$ (15.2)	$ (14.2)	$ (35.8)