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Dispositions - Narrative (Detail) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
Dispositions - Narrative (Detail) - USD ($) $ in Millions	Jul. 02, 2018	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
RRD Brazil
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain (loss) on disposition of business					$ 4.0
Net sales		$ 8.8		$ 14.3		$ 30.8
Loss before income taxes		$ 4.1		$ 6.5		$ 11.5
Disposition by Sale \| Business Services
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Cash on disposition of business					11.7
Gain (loss) on disposition of business					$ 6.2
Disposition by Sale \| Business Services \| Print Logistics
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [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 resulted from disposition of business			$ 3.6