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Note 4 - Consolidation | 12 Months Ended
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Dec. 31, 2024
Notes to Financial Statements |
Variable Interest Entities Voting Rights Entities Consolidation Disclosure [Text Block] | Note 4 — Consolidation ​ Variable Interest Entities ​ Consolidated Variable Interest Entities ​ Our consolidated VIEs as of December 31, 2024 and 2023, include certain consolidated seeded investment products in which we have an investment and act as the investment manager. Third-party assets held in consolidated VIEs are not available to us or to our creditors. We may not, under any circumstances, access third-party assets held by consolidated VIEs to use in our operating activities or otherwise. In addition, the investors in these VIEs have no recourse to the credit of JHG. ​ Unconsolidated Variable Interest Entities ​ The following table presents the carrying value of investments included in our Consolidated Balance Sheets pertaining to unconsolidated VIEs as of December 31, 2024 and 2023 (in millions): ​
​ |  | December 31,
​ |  | 2024 |  |  | 2023 |
Unconsolidated VIEs |  | $ | 53.6 |  |  | $ | 17.2 |
​ Our total exposure to unconsolidated VIEs represents the value of our economic ownership interest in the investments. Voting Rights Entities ​ Consolidated Voting Rights Entities ​ The following table presents the balances related to consolidated VREs that were recorded in our Consolidated Balance Sheets, including our net interest in these products, as of December 31, 2024 and 2023 (in millions): ​
​ |  | December 31, |
​ |  | 2024 |  |  | 2023 |
Investments |  | $ | 132.5 |  |  | $ | 242.9 |
Cash and cash equivalents |  |  | 26.3 |  |  |  | 6.5 |
Other current assets |  |  | 2.7 |  |  |  | 21.6 |
Accounts payable and accrued liabilities |  |  | (0.9 | ) |  |  | (1.1 | )
Total |  | $ | 160.6 |  |  | $ | 269.9 |
Redeemable noncontrolling interests in consolidated VREs |  |  | (22.7 | ) |  |  | (100.9 | )
JHG’s net interest in consolidated VREs |  | $ | 137.9 |  |  | $ | 169.0 |
Third-party assets held in consolidated VREs are not available to us or to our creditors. We may not, under any circumstances, access third-party assets held by consolidated VREs to use in our operating activities or otherwise. In addition, the investors in the VREs have no recourse to the credit of JHG.​ Our total exposure to consolidated VREs represents the value of our economic ownership interest in these seeded investment products. ​ Unconsolidated Voting Rights Entities ​ The following table presents the carrying value of investments included in our Consolidated Balance Sheets pertaining to unconsolidated VREs as of December 31, 2024 and 2023 (in millions): ​
​ |  | December 31, |
​ |  | 2024 |  |  | 2023 |
Unconsolidated VREs |  | $ | 73.5 |  |  | $ | 9.9 |
Our total exposure to unconsolidated VREs represents the value of our economic ownership interest in the investments.

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