CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME LOSS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (8.7)	$ 12.9	$ (78.8)	$ (3.0)
Other comprehensive income (loss), net of tax (Note 12):
Translation adjustments	17.4	(19.9)	4.2	(21.9)
Adjustments for net periodic pension and postretirement benefits plan cost	0.8	(0.2)	2.3	(0.6)
Changes in fair value of derivatives	0.3		(13.0)
Other		0.6		2.1
Other comprehensive income (loss)	18.5	(19.5)	(6.5)	(20.4)
Comprehensive income (loss)	9.8	(6.6)	(85.3)	(23.4)
Less: comprehensive income (loss) attributable to non-controlling interests	0.6	(0.1)	0.5	(0.1)
Comprehensive income (loss) attributable to RRD common stockholders	$ 9.2	$ (6.5)	$ (85.8)	$ (23.3)