Employee Retirement Plans (Defined Contribution Plans) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plan Disclosure [Line Items]
Reclassification of foreign currency translation adjustments	$ 0	$ 0
Quad/Graphics Diversified Plan
Defined Contribution Plan Disclosure [Line Items]
Total assets	2,300,000,000
Defined contribution plan, cost recognized	$ 13,200,000	$ 11,700,000