CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 34.8	$ (7.8)	$ 12.9	$ 19.1
Other comprehensive (loss) income, net of tax (Note 11):
Translation adjustments	(8.4)	17.7	(31.1)	46.8
Adjustment for net periodic pension and postretirement benefits plan cost	1.6	0.7	5.9	2.1
Adjustment for available-for-sale securities	0.0	(1.8)	0.0	(119.3)
Other comprehensive (loss) income	(6.8)	16.6	(25.2)	(70.4)
Comprehensive income (loss)	28.0	8.8	(12.3)	(51.3)
Less: comprehensive income attributable to noncontrolling interests	0.1	0.3	0.7	1.1
Comprehensive income (loss) attributable to RRD common stockholders	$ 27.9	$ 8.5	$ (13.0)	$ (52.4)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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