XML 83 R71.htm IDEA: XBRL DOCUMENT
v3.22.2

Segment Information (Narrative) (Details) | 6 Months Ended
--- | ---
Jun. 30, 2022 business
Segment Reporting [Abstract] |
Number of businesses | 2

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

X
- Definition Number of Businesses + References No definition available. + Details
Name: | zd_NumberOfBusinesses
Namespace Prefix: | zd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration