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Investments in Marketable Securities | 6 Months Ended
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Jun. 30, 2022
Marketable Securities [Abstract] |
Investments in Marketable Securities | Investments in Marketable Securities The following table summarizes the cost, gross unrealized gains, gross unrealized losses, and fair value of Investments in marketable securities:
|  |  |  |  | December 31, 2021 |  | June 30, 2022
Cost |  |  |  |  | $ | 73.2 |  |  | $ | 79.5 |
Unrealized gains |  |  |  |  | 8.1 |  |  | 2.1 |
Unrealized losses |  |  |  |  | (2.8) |  |  | (15.0) |
Fair value |  |  |  |  | $ | 78.5 |  |  | $ | 66.6 |
As of December 31, 2021 and June 30, 2022, Investments in marketable securities include consolidated Affiliate sponsored investment products with fair values of $42.9 million and $34.3 million, respectively.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details
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