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Revenue Recognition (Costs to Obtain Contracts) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($)
Change in Capitalized Contract Costs [Roll Forward]
Balance at January 1, 2020	$ 12.7
Costs to obtain contracts	0.6
Amortization of costs to obtain contracts	(3.7)
Balance at September 30, 2020	$ 9.6

X

- Definition

Capitalized Contract Cost, Costs To Obtain Contracts

+ References

No definition available.

+ Details

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Namespace Prefix:	quad_
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Balance Type:	credit
Period Type:	duration

X

- Definition

Change in Capitalized Contract Costs [Roll Forward]

+ References

No definition available.

+ Details

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Namespace Prefix:	quad_
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X

- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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X

- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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