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Accumulated Other Comprehensive Income (Loss) Attributable to Federated Hermes, Inc. Shareholders (Tables) | 3 Months Ended
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Mar. 31, 2021
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss), net of tax attributable to Federated Hermes shareholders resulted from foreign currency translation gain (loss):
(in thousands) |  |  |  |  |  |  |
Balance at December 31, 2020 |  |  |  |  |  |  | $ | 15,171 |  |  |
Other Comprehensive Income (Loss) |  |  |  |  |  |  | 3,558 |  |  |
Balance at March 31, 2021 |  |  |  |  |  |  | $ | 18,729 |  |  |
Balance at December 31, 2019 |  |  |  |  |  |  | $ | (249) |  |  |
Other Comprehensive Income (Loss) |  |  |  |  |  |  | (24,859) |  |  |
Balance at March 31, 2020 |  |  |  |  |  |  | $ | (25,108) |  |  |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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