Acquisition (Pro-Forma Financial Information) (Details) - Transporeon - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenue	$ 994.0	$ 979.5	$ 1,949.5	$ 2,013.6
Net income	$ 62.0	$ 129.6	$ 135.1	$ 195.5