CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net sales	$ 1,173.1	$ 1,216.9
Cost of sales	949.0	968.6
Gross profit	224.1	248.3
Selling, general and administrative expenses (exclusive of depreciation and amortization)	153.3	159.9
Restructuring, impairment and other expense -net (Note 7)	5.8	11.2
Depreciation and amortization	33.8	39.2
Other operating expense	6.1	4.9
Income from operations	25.1	33.1
Interest expense-net	30.5	33.9
Investment and other income-net	(4.8)	(4.0)
(Loss) income from continuing operations before income taxes	(0.6)	3.2
Income tax expense (benefit)	1.1	(3.8)
Net (loss) income from continuing operations	(1.7)	7.0
Gain (loss) on sale of discontinued operations, net of tax	0.6	(5.0)
Loss from discontinued operations, net of tax		(14.9)
Net income (loss) from discontinued operations (Note 2)	0.6	(19.9)
Net loss	(1.1)	(12.9)
Less: income attributable to noncontrolling interests	0.2	0.1
Net loss attributable to RRD common stockholders	$ (1.3)	$ (13.0)
Basic and diluted net (loss) earnings per share attributable to RRD common stockholders (Note 11):
Continuing Operations	$ (0.03)	$ 0.10
Discontinued Operations	0.01	(0.28)
Net loss attributable to RR Donnelley stockholders	$ (0.02)	$ (0.18)
Weighted average number of common shares outstanding:
Basic	72.7	71.6
Diluted	72.7	71.6