Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning balance, shares at Dec. 31, 2022		56,600,000		3,900,000
Beginning balance, Quad's shareholders equity at Dec. 31, 2022	$ 172.9	$ 1.4	$ 841.8	$ (23.5)	$ (518.5)	$ (128.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(24.6)				(24.6)
Foreign currency translation adjustments	6.5					6.5
Interest rate derivatives adjustments, net of tax	0.6					0.6
Pension benefit plan liability adjustments, net of tax	(0.1)					(0.1)
Stock-based compensation	1.0		1.0
Purchases of treasury stock (in shares)				(100,000)
Purchases of treasury stock	(0.3)			$ (0.3)
Issuance of share-based awards, net of other activity, shares				1,400,000
Issuance of share-based awards, net of other activity	0.0		(4.3)	$ 4.3
Equity awards redeemed to pay employees’ tax obligations, shares				(300,000)
Equity awards redeemed to pay employees’ tax obligations	(1.7)			$ (1.7)
Ending balance, shares at Mar. 31, 2023		56,600,000		2,900,000
Ending balance, Quad's shareholders' equity at Mar. 31, 2023	154.5	$ 1.4	838.5	$ (21.2)	(543.1)	(121.1)
Beginning balance, shares at Dec. 31, 2023		56,600,000		5,600,000
Beginning balance, Quad's shareholders equity at Dec. 31, 2023	119.5	$ 1.4	842.7	$ (33.1)	(573.9)	(117.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(28.1)				(28.1)
Foreign currency translation adjustments	(0.4)					(0.4)
Interest rate derivatives adjustments, net of tax	0.9					0.9
Pension benefit plan liability adjustments, net of tax	(0.2)					(0.2)
Cash dividends declared	(2.6)				(2.6)
Stock-based compensation	1.8		1.8
Conversion of class B shares, shares		(294,875)		300,000
Conversion of class B shares	0.0		(1.3)	$ 1.3
Issuance of share-based awards, net of other activity, shares				1,300,000
Issuance of share-based awards, net of other activity	0.0		(5.2)	$ 5.2
Equity awards redeemed to pay employees’ tax obligations, shares				(300,000)
Equity awards redeemed to pay employees’ tax obligations	(2.1)			$ (2.1)
Ending balance, shares at Mar. 31, 2024		56,300,000		4,300,000
Ending balance, Quad's shareholders' equity at Mar. 31, 2024	$ 89.2	$ 1.4	$ 838.0	$ (28.7)	$ (604.6)	$ (116.9)