Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Loss	Quad’s Shareholders’ Equity	Noncontrolling Interests	Previously Reported Common Stock	Previously Reported Additional Paid-in Capital	Previously Reported Treasury Stock	Previously Reported Accumulated Deficit	Previously Reported Accumulated Other Comprehensive Loss	Previously Reported Quad’s Shareholders’ Equity	Previously Reported Noncontrolling Interests	Restatement Adjustment Accumulated Deficit	Restatement Adjustment Accumulated Other Comprehensive Loss
Beginning balance, shares at Dec. 31, 2016		55.5		(4.1)
Beginning balance, Quad's shareholders equity at Dec. 31, 2016		$ 1.4	$ 912.4	$ (113.3)	$ (206.4)	$ (152.6)	$ 441.5
Beginning balance, noncontrolling interests at Dec. 31, 2016								$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	$ 107.2				107.2		107.2
Less: net earnings (loss) attributable to noncontrolling interests	0.0
Foreign currency translation adjustments						14.9	14.9
Pension benefit plan liability adjustments, net of tax						12.0	12.0
Interest rate swap adjustments, net of tax						1.3	1.3
Cash dividends declared					(63.7)		(63.7)
Stock-based compensation			16.4				16.4
Purchases of treasury stock, shares				(0.2)
Purchases of treasury stock	(3.8)			$ (3.8)
Stock options exercised			(1.7)	$ 4.3			2.6
Stock options exercised, shares				0.2
Issuance of share-based awards, net of other activity			(24.1)	$ 24.1
Issuance of share-based awards, net of other activity, shares				0.9
Cancellation of class B treasury shares, shares		(1.2)		1.2
Cancellation of class B treasury shares (Note 19)			(41.9)	$ 41.9
Equity awards redeemed to pay employees' tax obligations, shares				(0.3)
Equity awards redeemed to pay employees’ tax obligations				$ (6.0)			(6.0)
Ending balance, shares at Dec. 31, 2017		54.3		(2.3)					54.3		(2.3)
Ending balance, Quad's shareholders' equity at Dec. 31, 2017		$ 1.4	861.1	$ (52.8)	(156.8)	(127.3)	525.6		$ 1.4	$ 861.1	$ (52.8)	$ (162.9)	$ (124.4)	$ 522.4
Ending balance, Quad's shareholders' equity (Accounting Standards Update 2014-09) at Dec. 31, 2017																$ 3.2	$ 3.2
Ending balance, Quad's shareholders' equity (Accounting Standards Update 2018-02) at Dec. 31, 2017																$ 2.9	$ (2.9)
Ending balance, noncontrolling interests at Dec. 31, 2017								0.0							$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	8.5				8.5		8.5
Less: net earnings (loss) attributable to noncontrolling interests	(0.6)							(0.6)
Consolidation of Rise								18.3
Foreign currency translation adjustments						(13.0)	(13.0)
Pension benefit plan liability adjustments, net of tax						(13.6)	(13.6)
Interest rate swap adjustments, net of tax						1.7	1.7
Cash dividends declared					(63.1)		(63.1)
Stock-based compensation			15.6				15.6
Purchases of treasury stock, shares				(1.9)
Purchases of treasury stock	(36.7)			$ (36.7)
Stock options exercised			(3.3)	$ 7.5			4.2
Stock options exercised, shares				0.3
Issuance of share-based awards, net of other activity			(12.1)	$ 12.1
Issuance of share-based awards, net of other activity, shares				0.6
Equity awards redeemed to pay employees' tax obligations, shares				(0.4)
Equity awards redeemed to pay employees’ tax obligations				$ (9.0)			(9.0)
Employee stock ownership plan contribution, shares				1.0
Employee stock ownership plan contribution				$ 22.3			22.3
Ending balance, shares at Dec. 31, 2018		54.3		(2.7)
Ending balance, Quad's shareholders' equity at Dec. 31, 2018	442.5	$ 1.4	861.3	$ (56.6)	(211.4)	(152.2)	442.5
Ending balance, noncontrolling interests at Dec. 31, 2018	17.7							17.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	(156.3)				(156.3)		(156.3)
Less: net earnings (loss) attributable to noncontrolling interests	0.0
Foreign currency translation adjustments						(1.0)	(1.0)
Pension benefit plan liability adjustments, net of tax						(6.0)	(6.0)
Interest rate swap adjustments, net of tax						(8.0)	(8.0)
Cash dividends declared					(55.8)		(55.8)
Stock-based compensation			14.7				14.7
Issuance of share-based awards, net of other activity			(28.6)	$ 31.7			3.1
Issuance of share-based awards, net of other activity, shares				1.6
Equity awards redeemed to pay employees' tax obligations, shares				(0.5)
Equity awards redeemed to pay employees’ tax obligations				$ (6.6)			(6.6)
Ending balance, shares at Dec. 31, 2019		54.3		(1.6)
Ending balance, Quad's shareholders' equity at Dec. 31, 2019	226.6	$ 1.4	$ 847.4	$ (31.5)	$ (423.5)	$ (167.2)	$ 226.6
Ending balance, noncontrolling interests at Dec. 31, 2019	$ 17.7							$ 17.7