Discontinued Operations - Narrative (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 14, 2020	May 08, 2019
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales	$ 1,191.3	$ 1,417.2	$ 3,417.7	$ 4,044.0
Logistics
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales	11.0	15.2	33.8	46.1
Business Services
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales	$ 936.8	$ 1,073.8	$ 2,625.4	$ 3,137.5
Business Services | Disposition by Sale
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Cash on disposition of business						$ 11.6
Business Services | Disposition by Sale | Logistics | DLS Worldwide
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Cash on disposition of business					$ 225.0
Escrow deposit					$ 22.5