Condensed Consolidated Statements of Shareholders' Equity and Noncontrolling Interests - USD ($) shares in Millions, $ in Millions | Total | Common Stock | Common StockCumulative Effect, Period Of Adoption, Adjusted Balance | Additional Paid-in Capital | Additional Paid-in CapitalCumulative Effect, Period Of Adoption, Adjusted Balance | Treasury Stock | Treasury StockCumulative Effect, Period Of Adoption, Adjusted Balance | Accumulated Deficit | Accumulated DeficitCumulative Effect, Period Of Adoption, Adjustment | Accumulated DeficitCumulative Effect, Period Of Adoption, Adjusted Balance | Accumulated Other Comprehensive Loss | Accumulated Other Comprehensive LossCumulative Effect, Period Of Adoption, Adjusted Balance | Quad’s Shareholders’ Equity | Quad’s Shareholders’ EquityCumulative Effect, Period Of Adoption, Adjustment | Quad’s Shareholders’ EquityCumulative Effect, Period Of Adoption, Adjusted Balance | Noncontrolling Interests | Noncontrolling InterestsCumulative Effect, Period Of Adoption, Adjusted Balance |
Beginning balance, shares at Dec. 31, 2019 | | 54.3 | 54.3 | | | (1.6) | (1.6) | | | | | | | | | | |
Beginning balance, Quad's shareholders equity at Dec. 31, 2019 | | $ 1.4 | $ 1.4 | $ 847.4 | $ 847.4 | $ (31.5) | $ (31.5) | $ (423.5) | $ (6.3) | $ (429.8) | $ (167.2) | $ (167.2) | $ 226.6 | $ (6.3) | $ 220.3 | | |
Beginning balance, noncontrolling interests at Dec. 31, 2019 | | | | | | | | | | | | | | | | $ 17.7 | $ 17.7 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | | | |
Net earnings (loss) attributable to Quad common shareholders | | | | | | | | (12.4) | | | | | (12.4) | | | | |
Less: net loss attributable to noncontrolling interests | | | | | | | | | | | | | | | | 0 | |
Change in ownership of noncontrolling interests | | | | | | | | | | | | | | | | 0.1 | |
Foreign currency translation adjustments | | | | | | | | | | | (15.3) | | (15.3) | | | | |
Interest rate swap adjustments, net of tax | | | | | | | | | | | (8.3) | | (8.3) | | | | |
Cash dividends declared | | | | | | | | (7.9) | | | | | (7.9) | | | | |
Stock-based compensation | | | | 3.1 | | | | | | | | | 3.1 | | | | |
Issuance of share-based awards, net of other activity, shares | | 0.1 | | | | 1.1 | | | | | | | | | | | |
Issuance of share-based awards, net of other activity | | | | 19.8 | | $ (19.8) | | | | | | | 0 | | | | |
Awards redeemed to pay employees' tax obligations, shares | | | | | | (0.2) | | | | | | | | | | | |
Awards redeemed to pay employees’ tax obligations | | | | | | $ (1) | | | | | | | (1) | | | | |
Ending balance, shares at Mar. 31, 2020 | | 54.4 | | | | (0.7) | | | | | | | | | | | |
Ending balance, Quad's shareholders' equity at Mar. 31, 2020 | | $ 1.4 | | 830.7 | | $ (12.7) | | (450.1) | | | (190.8) | | 178.5 | | | | |
Ending balance, noncontrolling interests at Mar. 31, 2020 | | | | | | | | | | | | | | | | 17.8 | |
Beginning balance, shares at Dec. 31, 2019 | | 54.3 | 54.3 | | | (1.6) | (1.6) | | | | | | | | | | |
Beginning balance, Quad's shareholders equity at Dec. 31, 2019 | | $ 1.4 | $ 1.4 | 847.4 | $ 847.4 | $ (31.5) | $ (31.5) | (423.5) | $ (6.3) | $ (429.8) | (167.2) | $ (167.2) | 226.6 | $ (6.3) | $ 220.3 | | |
Beginning balance, noncontrolling interests at Dec. 31, 2019 | | | | | | | | | | | | | | | | 17.7 | $ 17.7 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | | | |
Net earnings (loss) attributable to Quad common shareholders | $ (35.9) | | | | | | | | | | | | | | | | |
Less: net loss attributable to noncontrolling interests | (0.2) | | | | | | | | | | | | | | | | |
Ending balance, shares at Jun. 30, 2020 | | 54.4 | | | | (0.7) | | | | | | | | | | | |
Ending balance, Quad's shareholders' equity at Jun. 30, 2020 | | $ 1.4 | | 828 | | $ (12.9) | | (473.6) | | | (188.7) | | 154.2 | | | | |
Ending balance, noncontrolling interests at Jun. 30, 2020 | | | | | | | | | | | | | | | | 0.7 | |
Beginning balance, shares at Mar. 31, 2020 | | 54.4 | | | | (0.7) | | | | | | | | | | | |
Beginning balance, Quad's shareholders equity at Mar. 31, 2020 | | $ 1.4 | | 830.7 | | $ (12.7) | | (450.1) | | | (190.8) | | 178.5 | | | | |
Beginning balance, noncontrolling interests at Mar. 31, 2020 | | | | | | | | | | | | | | | | 17.8 | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | | | |
Net earnings (loss) attributable to Quad common shareholders | (23.5) | | | | | | | (23.5) | | | | | (23.5) | | | | |
Changes in ownership of noncontrolling interests | | | | (5.4) | | | | | | | | | | | | | |
Less: net loss attributable to noncontrolling interests | (0.2) | | | | | | | | | | | | | | | 0.2 | |
Change in ownership of noncontrolling interests | | | | | | | | | | | | | | | | (16.9) | |
Foreign currency translation adjustments | | | | | | | | | | | 2.1 | | 2.1 | | | | |
Stock-based compensation | | | | 2.7 | | | | | | | | | 2.7 | | | | |
Issuance of share-based awards, net of other activity | | | | 0 | | $ 0.2 | | | | | | | (0.2) | | | | |
Ending balance, shares at Jun. 30, 2020 | | 54.4 | | | | (0.7) | | | | | | | | | | | |
Ending balance, Quad's shareholders' equity at Jun. 30, 2020 | | $ 1.4 | | 828 | | $ (12.9) | | (473.6) | | | (188.7) | | 154.2 | | | | |
Ending balance, noncontrolling interests at Jun. 30, 2020 | | | | | | | | | | | | | | | | 0.7 | |
Beginning balance, shares at Dec. 31, 2020 | | 54.4 | | | | (0.8) | | | | | | | | | | | |
Beginning balance, Quad's shareholders equity at Dec. 31, 2020 | 84.1 | $ 1.4 | | 833.1 | | $ (13.1) | | (566) | | | (171.3) | | 84.1 | | | | |
Beginning balance, noncontrolling interests at Dec. 31, 2020 | 0.7 | | | | | | | | | | | | | | | 0.7 | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | | | |
Net earnings (loss) attributable to Quad common shareholders | | | | | | | | 10.2 | | | | | 10.2 | | | | |
Foreign currency translation adjustments | | | | | | | | | | | (6) | | (6) | | | | |
Interest rate swap adjustments, net of tax | | | | | | | | | | | 1.8 | | 1.8 | | | | |
Stock-based compensation | | | | 3 | | | | | | | | | 3 | | | | |
Issuance of share-based awards, net of other activity, shares | | 1.3 | | | | 0 | | | | | | | | | | | |
Issuance of share-based awards, net of other activity | | | | 0.6 | | $ (1) | | | | | | | (0.4) | | | | |
Awards redeemed to pay employees' tax obligations, shares | | | | | | (0.2) | | | | | | | | | | | |
Awards redeemed to pay employees’ tax obligations | | | | | | $ (1.1) | | | | | | | (1.1) | | | | |
Ending balance, shares at Mar. 31, 2021 | | 55.7 | | | | (1) | | | | | | | | | | | |
Ending balance, Quad's shareholders' equity at Mar. 31, 2021 | | $ 1.4 | | 835.5 | | $ (13.2) | | (555.8) | | | (175.5) | | 92.4 | | | | |
Ending balance, noncontrolling interests at Mar. 31, 2021 | | | | | | | | | | | | | | | | 0.7 | |
Beginning balance, shares at Dec. 31, 2020 | | 54.4 | | | | (0.8) | | | | | | | | | | | |
Beginning balance, Quad's shareholders equity at Dec. 31, 2020 | 84.1 | $ 1.4 | | 833.1 | | $ (13.1) | | (566) | | | (171.3) | | 84.1 | | | | |
Beginning balance, noncontrolling interests at Dec. 31, 2020 | 0.7 | | | | | | | | | | | | | | | 0.7 | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | | | |
Net earnings (loss) attributable to Quad common shareholders | 44.6 | | | | | | | | | | | | | | | | |
Less: net loss attributable to noncontrolling interests | 0 | | | | | | | | | | | | | | | | |
Ending balance, shares at Jun. 30, 2021 | | 55.7 | | | | (1.1) | | | | | | | | | | | |
Ending balance, Quad's shareholders' equity at Jun. 30, 2021 | 132.1 | $ 1.4 | | 836.4 | | $ (13.6) | | (521.3) | | | (170.8) | | 132.1 | | | | |
Ending balance, noncontrolling interests at Jun. 30, 2021 | 0 | | | | | | | | | | | | | | | 0 | |
Beginning balance, shares at Mar. 31, 2021 | | 55.7 | | | | (1) | | | | | | | | | | | |
Beginning balance, Quad's shareholders equity at Mar. 31, 2021 | | $ 1.4 | | 835.5 | | $ (13.2) | | (555.8) | | | (175.5) | | 92.4 | | | | |
Beginning balance, noncontrolling interests at Mar. 31, 2021 | | | | | | | | | | | | | | | | 0.7 | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | | | | | | | | | | |
Net earnings (loss) attributable to Quad common shareholders | 34.4 | | | | | | | 34.4 | | | | | 34.4 | | | | |
Changes in ownership of noncontrolling interests | (1.1) | | | (1.1) | | | | | | | | | | | | (0.7) | |
Less: net loss attributable to noncontrolling interests | 0 | | | | | | | | | | | | | | | 0 | |
Foreign currency translation adjustments | | | | | | | | | | | 2.2 | | 2.2 | | | | |
Interest rate swap adjustments, net of tax | | | | | | | | | | | 1.8 | | 1.8 | | | | |
Pension benefit plan liability adjustments, net of tax | | | | | | | | | | | 0.7 | | 0.7 | | | | |
Cash dividends declared | | | | | | | | 0.1 | | | | | 0.1 | | | | |
Stock-based compensation | | | | 1.6 | | | | | | | | | 1.6 | | | | |
Issuance of share-based awards, net of other activity, shares | | | | | | (0.1) | | | | | | | | | | | |
Issuance of share-based awards, net of other activity | | | | (0.4) | | $ 0.4 | | | | | | | 0 | | | | |
Ending balance, shares at Jun. 30, 2021 | | 55.7 | | | | (1.1) | | | | | | | | | | | |
Ending balance, Quad's shareholders' equity at Jun. 30, 2021 | 132.1 | $ 1.4 | | $ 836.4 | | $ (13.6) | | $ (521.3) | | | $ (170.8) | | $ 132.1 | | | | |
Ending balance, noncontrolling interests at Jun. 30, 2021 | $ 0 | | | | | | | | | | | | | | | $ 0 | |