Dispositions and Acquisition - Narrative (Detail) - USD ($) $ in Millions			12 Months Ended
	Aug. 01, 2019	Jul. 02, 2018	Dec. 31, 2019	Dec. 31, 2018	Oct. 25, 2019	May 08, 2019
Business Acquisition [Line Items]
Business acquisition cash paid			$ 3.0
Proceeds from sale of business			50.6	$ 44.1
Business Services
Business Acquisition [Line Items]
Business acquisition date of completion	Aug. 01, 2019
Business acquisition purchase price	$ 14.6
Business acquisition cash paid	3.0
Business acquisition note payable	$ 3.0
Business acquisition note payable maturity date.	Jan. 31, 2020
Business acquisition contingent consideration	$ 8.6
Disposition by Sale | Business Services
Business Acquisition [Line Items]
Cash on disposition of business						$ 11.6
Gain (loss) on disposition of business			6.1
Disposition by Sale | Business Services | Print Logistics
Business Acquisition [Line Items]
Cash on disposition of business		$ 60.0
Proceeds from sale of business		43.9
Cash included in disposition		$ 4.9
Pre-tax gain (loss) resulted from disposition of business				$ 3.6
GDS | Disposition by Sale
Business Acquisition [Line Items]
Cash on disposition of business					$ 47.3
Gain (loss) resulted from disposition of business			(0.9)
RRD Brazil
Business Acquisition [Line Items]
Gain (loss) on disposition of business			$ 4.0