Segment and Geographic Area Information - Schedule of Corporate Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Cash and cash equivalents	$ 370.6	$ 273.4
Deferred income tax assets, net of valuation allowances	162.9	163.0
Property, plant and equipment, net	531.3	615.1
Total assets	3,640.8	3,904.5
Corporate
Segment Reporting Information [Line Items]
Cash and cash equivalents	(31.8)	(37.5)	$ 19.3
Deferred income tax assets, net of valuation allowances	37.1	36.7	67.5
Software, net	49.0	41.6	43.0
Deferred compensation plan and Company owned life insurance assets	89.3	88.6	75.3
Investment in LSC and Donnelley Financial			328.7
Property, plant and equipment, net	32.3	29.6	30.2
Other	25.8	39.0	83.2
Total assets	$ 201.7	$ 198.0	$ 647.2