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Earnings Per Share Attributable to Quad Common Shareholders - Schedule of Calculation of Numerator and Denominator in Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Mar. 09, 2020
Dec. 31, 2021
Dec. 31, 2020
Numerator:      
Net earnings (loss) from continuing operations   $ 37.8 $ (106.6)
Less: net loss attributable to noncontrolling interests   0.0 (0.2)
Net earnings (loss) from continuing operations attributable to Quad common shareholders   37.8 (106.4)
Loss from discontinued operations, net of tax   0.0 (21.9)
Net earnings (loss) attributable to Quad common shareholders   $ 37.8 $ (128.3)
Denominator:      
Basic weighted average number of common shares outstanding for all classes of common shares (in shares)   51.3 50.6
Plus: effect of dilutive equity incentive instruments (in shares)   1.7 0.0
Diluted weighted average number of common shares outstanding for all classes of common shares (in shares)   53.0 50.6
Earnings (loss) per share attributable to Quad common shareholders:      
Basic, continuing operations (in dollars per share)   $ 0.74 $ (2.10)
Basic, discontinued operations (in dollars per share)   0 (0.43)
Basic (in dollars per share)   0.74 (2.53)
Diluted, continuing operations (in dollars per share)   0.71 (2.10)
Diluted, discontinued operations (in dollars per share)   0 (0.43)
Diluted (in dollars per share)   0.71 (2.53)
Cash dividends paid per common share for all classes of common shares (in dollars per share) $ 0.15 $ 0 $ 0.15