Discontinued Operations - Schedule of Financial Results of Discontinued Operations (Parenthetical) (Detail) - Donnelley Financial Solutions And L S C Communications - Discontinued Operations Spinoff - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Spinoff transaction costs	$ 18.4	$ 30.3
Corporate Level Debt
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Interest expense	$ 17.8	$ 35.8