Discontinued Operations - Schedule of Financial Results of Discontinued Operations (Detail) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
		Sep. 30, 2016	Sep. 30, 2016
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net (loss) earnings from discontinued operations		$ (29.1)	$ 15.8
Donnelley Financial Solutions And L S C Communications | Discontinued Operations Spinoff
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales		1,122.6	3,303.4
Cost of sales		879.1	2,534.7
Operating expenses	[1]	170.0	592.0
Interest and other expense net	[2]	104.0	139.5
(Loss) earnings before income taxes		(30.5)	37.2
Income tax (benefit) expense		(1.4)	21.4
Net (loss) earnings from discontinued operations		$ (29.1)	$ 15.8

[1] Includes spinoff transaction costs incurred of $27.0 million and $57.3 million during the three and nine month periods ended September 30, 2016, respectively.

[2] Includes the related interest expense of the corporate level debt which was retired in connection with the Separation totaling $17.8 million and $53.6 million for the three and nine months ended September 30, 2016, respectively. Also includes the losses on the extinguishment of corporate level debt executed in conjunction with the spinoff transactions totaling $85.3 million, for the three and nine months ended September 30, 2016.