XML 72 R62.htm IDEA: XBRL DOCUMENT
v3.22.2

Redeemable Noncontrolling Interests in Subsidiaries - Narrative (Details) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2021 USD ($)
Noncontrolling Interest [Abstract] |
Contributions from noncontrolling Interest | $ 892.1

X
- Definition Temporary Equity, Contribution from Noncontrolling Interests in Subsidiaries + References No definition available. + Details
Name: | fhi_TemporaryEquityContributionFromNoncontrollingInterestsInSubsidiaries
Namespace Prefix: | fhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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