v3.25.4

Share-based Compensation - Schedule of Performance Period of Shares Award (Parenthetical) (Details) | 12 Months Ended
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Dec. 31, 2025
Share-Based Payment Arrangement [Abstract] |
Estimated or actual attainment | 100.00%

X
- Definition Estimated or actual attainment. + References No definition available. + Details
Name: | dfin_EstimatedOrActualAttainment
Namespace Prefix: | dfin_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration