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Variable Interest Entities (Tables) | 12 Months Ended
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Dec. 31, 2023
Variable Interest Entities |
Carrying Amounts of Assets and Liabilities of Consolidated Variable Interest Entities (Table) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023 |  | December 31, 2022 | ​
​ | ​ | Total | ​ | Total | ​ | Total | ​ | Total | ​
​ |  | assets |  | liabilities |  | assets |  | liabilities | ​
​ | ​ | ​ | (in millions) | ​
Mandatory retirement savings funds (1) | ​ | $ | 35,034.4 | ​ | $ | 34,688.3 | ​ | $ | 34,876.9 | ​ | $ | 34,528.3 | ​
Real estate (2) | ​ |  | 829.1 | ​ |  | 63.0 | ​ |  | 689.6 | ​ |  | 42.2 | ​
Sponsored investment funds (3) | ​ |  | 523.8 | ​ |  | 6.3 | ​ |  | 471.4 | ​ |  | 2.6 | ​
Residential mortgage loans (4) | ​ | ​ | 874.7 | ​ | ​ | 20.9 | ​ | ​ | 1,182.6 | ​ | ​ | 41.8 | ​
Asset-backed limited partnership (5) | ​ | ​ | 249.3 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​
Total | ​ | $ | 37,511.3 | ​ | $ | 34,778.5 | ​ | $ | 37,220.5 | ​ | $ | 34,614.9 | ​
(1) | The assets of the mandatory retirement savings funds primarily include separate account assets and equity securities. The liabilities primarily include separate account liabilities and included contractholder funds in 2022.
(2) | The assets of the real estate VIEs primarily include real estate, other investments and cash. Liabilities primarily include other liabilities.
(3) | The assets of sponsored investment funds are primarily fixed maturities and equity securities, certain of which are reported with other investments, and cash. The consolidated statements of financial position included a $226.4 million and $235.3 million redeemable noncontrolling interest for sponsored investment funds as of December 31, 2023 and December 31, 2022, respectively.
(4) | The assets of the residential mortgage loans VIEs primarily include residential mortgage loans. The liabilities primarily include other liabilities.
(5) | The assets of the asset-backed limited partnership VIE primarily include consumer loans, auto loans, other loans and credit facilities. These assets are reported with cash and cash equivalents,other investments and fixed maturities, trading on the consolidated statements of financial position. As of December 31, 2023, we did not have any unfunded commitments to the VIE. Unfunded commitments are not liabilities on our consolidated statements of financial position because we are only required to fund additional capital when called upon to do so by the investment manager.
Asset Carrying Value and Maximum Loss Exposure of Unconsolidated Variable Interest Entities (Table) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Maximum exposure to | ​
​ |  | Asset carrying value |  | loss (1) | ​
​ | ​ | (in millions) | ​
December 31, 2023 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fixed maturities, available-for-sale: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate | ​ | $ | 364.9 | ​ | $ | 369.8 | ​
Residential mortgage-backed pass-through securities | ​ | ​ | 3,061.1 | ​ | ​ | 3,199.7 | ​
Commercial mortgage-backed securities | ​ | ​ | 4,775.5 | ​ | ​ | 5,428.6 | ​
Collateralized debt obligations (2) | ​ |  | 5,403.7 | ​ |  | 5,465.4 | ​
Other debt obligations | ​ |  | 7,902.2 | ​ |  | 9,002.9 | ​
Fixed maturities, trading: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Residential mortgage-backed pass-through securities | ​ |  | 10.4 | ​ |  | 10.4 | ​
Commercial mortgage-backed securities | ​ |  | 53.1 | ​ |  | 53.1 | ​
Collateralized debt obligations (2) | ​ | ​ | 2.0 | ​ | ​ | 2.0 | ​
Other debt obligations | ​ | ​ | 228.4 | ​ | ​ | 228.4 | ​
Equity securities | ​ | ​ | 110.4 | ​ | ​ | 110.4 | ​
Other investments: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other limited partnership and fund interests (3) | ​ |  | 2,091.7 | ​ |  | 3,785.9 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2022 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fixed maturities, available-for-sale: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate | ​ | $ | 111.8 | ​ | $ | 127.2 | ​
Residential mortgage-backed pass-through securities | ​ | ​ | 2,228.7 | ​ | ​ | 2,420.6 | ​
Commercial mortgage-backed securities | ​ | ​ | 4,864.6 | ​ | ​ | 5,572.2 | ​
Collateralized debt obligations (2) | ​ |  | 4,566.4 | ​ |  | 4,820.0 | ​
Other debt obligations | ​ |  | 6,507.6 | ​ |  | 7,566.2 | ​
Fixed maturities, trading: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Residential mortgage-backed pass-through securities | ​ |  | 5.4 | ​ |  | 5.4 | ​
Commercial mortgage-backed securities | ​ |  | 83.4 | ​ |  | 83.4 | ​
Collateralized debt obligations (2) | ​ | ​ | 5.7 | ​ | ​ | 5.7 | ​
Other debt obligations | ​ | ​ | 80.0 | ​ | ​ | 80.0 | ​
Equity securities | ​ | ​ | 99.8 | ​ | ​ | 99.8 | ​
Other investments: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other limited partnership and fund interests (3) | ​ |  | 1,473.5 | ​ |  | 2,434.9 | ​
(1) | Our risk of loss is limited to our initial investment measured at amortized cost for fixed maturities, available-for-sale, plus any unfunded commitments and/or guarantees and similar provisions for collateralized debt obligations and other debt obligations. Our risk of loss is limited to our investment measured at fair value for our fixed maturities, trading and equity securities. Our risk of loss is limited to our carrying value plus any unfunded commitments and/or guarantees and similar provisions for our other investments. A carrying value of zero is used if distributions have been received in excess of our investment, resulting in a negative carrying value for the investment. Unfunded commitments are not liabilities on our consolidated statements of financial position because we are only required to fund additional equity when called upon to do so by the general partner or investment manager.
(2) | Primarily consists of collateralized loan obligations backed by secured corporate loans.
(3) | As of December 31, 2023 and December 31, 2022, the maximum exposure to loss for other limited partnership and fund interests includes $251.9 million and $144.3 million, respectively, of debt within certain of our managed international real estate funds that is fully secured by assets whose value exceeds the amount of the debt, but also includes recourse to the investment manager.

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- Definition Tabular disclosure of variable interest entities carrying amount of consolidated assets that are collateral for the VIE's obligations and consolidated liabilities. + References No definition available. + Details
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- Definition Tabular disclosure of carrying amount and maximum loss exposure for investments in securities issued by unconsolidated variable interest entities. + References No definition available. + Details
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