CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 1,191.3	$ 1,417.2	$ 3,417.7	$ 4,044.0
Cost of sales	943.6	1,132.9	2,729.4	3,259.4
Gross profit	247.7	284.3	688.3	784.6
Selling, general and administrative expenses (exclusive of depreciation and amortization)	138.0	168.2	436.7	522.7
Restructuring, impairment and other expense (income) -net (Note 7)	54.2	(2.3)	93.8	30.7
Depreciation and amortization	36.2	42.0	112.3	121.5
Other operating expense	3.4	5.4	15.5	3.3
Income from operations	15.9	71.0	30.0	106.4
Interest expense-net	34.3	37.4	102.7	115.6
Investment and other income-net	(3.6)	(4.6)	(10.8)	(11.3)
Loss on debt extinguishment	0.2	0.8	0.4	0.8
(Loss) income from continuing operations before income taxes	(15.0)	37.4	(62.3)	1.3
Income tax (benefit) expense	(5.9)	44.3	(3.0)	9.2
Net loss from continuing operations	(9.1)	(6.9)	(59.3)	(7.9)
Loss on sale of discontinued operations, net of tax			(6.9)
Income (loss) from discontinued operations, net of tax (Note 2)	0.4	19.8	(12.6)	4.9
Net income (loss) from discontinued operations	0.4	19.8	(19.5)	4.9
Net (loss) income	(8.7)	12.9	(78.8)	(3.0)
Less: income attributable to noncontrolling interests	0.2	0.3	0.3	0.2
Net (loss) income attributable to RRD common stockholders	$ (8.9)	$ 12.6	$ (79.1)	$ (3.2)
Basic net (loss) earnings per share attributable to RRD common stockholders (Note 11):
Continuing Operations	$ (0.13)	$ (0.10)	$ (0.83)	$ (0.11)
Discontinued Operations	0.01	0.28	(0.27)	0.07
Net (loss) earnings attributable to RR Donnelley stockholders	(0.12)	0.18	(1.10)	(0.04)
Diluted net (loss) earnings per share attributable to RRD common stockholders (Note 11):
Continuing Operations	(0.13)	(0.10)	(0.83)	(0.11)
Discontinued Operations	0.01	0.28	(0.27)	0.07
Net (loss) earnings attributable to RR Donnelley stockholders	$ (0.12)	$ 0.18	$ (1.10)	$ (0.04)
Weighted average number of common shares outstanding:
Basic	72.4	71.4	72.1	71.2
Diluted	72.4	71.4	72.1	71.2