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Variable Interest Entities - Unconsolidated VIEs (Details) - USD ($) $ in Millions | Jun. 30, 2021 | Dec. 31, 2020
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Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | $ 302,165.5 | $ 296,627.7
Carrying value used if distributions received are in excess of investment | 0.0 | 0.0
Money Market Funds |  |
Total assets of unconsolidated money market mutual funds | 4,500.0 | 4,400.0
Corporate debt securities | Available-for-sale |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 284.6 | 285.7
Corporate debt securities | Available-for-sale | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 295.2 | 296.9
Residential mortgage-backed pass-through securities | Available-for-sale |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 2,703.0 | 2,857.6
Residential mortgage-backed pass-through securities | Available-for-sale | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 2,774.1 | 2,986.8
Residential mortgage-backed pass-through securities | Trading |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 147.4 | 190.5
Residential mortgage-backed pass-through securities | Trading | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 147.4 | 190.5
Commercial mortgage-backed securities | Available-for-sale |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 4,930.5 | 4,741.2
Commercial mortgage-backed securities | Available-for-sale | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 5,139.5 | 4,942.3
Commercial mortgage-backed securities | Trading |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 26.7 | 27.1
Commercial mortgage-backed securities | Trading | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 26.7 | 27.1
Collateralized debt obligations | Available-for-sale |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 3,607.6 | 4,045.9
Collateralized debt obligations | Available-for-sale | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 3,605.5 | 4,027.5
Collateralized debt obligations | Trading |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 12.3 | 20.6
Collateralized debt obligations | Trading | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 12.3 | 20.6
Other debt obligations | Available-for-sale |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 6,500.2 | 6,832.6
Other debt obligations | Available-for-sale | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 6,666.1 | 7,045.9
Other debt obligations | Trading |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 8.6 | 9.4
Other debt obligations | Trading | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 8.6 | 9.4
Equity securities |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 125.8 | 121.7
Equity securities | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 125.8 | 121.7
Other investments: Other limited partnership and fund interests |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 1,868.0 | 1,739.0
Fully secured debt of international real estate funds with recourse to the investment manager, included in maximum loss exposure | 136.5 | 141.2
Other investments: Other limited partnership and fund interests | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | $ 1,112.1 | $ 999.1

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- Definition The amount of debt of managed international rest estate funds that is fully secured by assets whose value exceeds the amount of the debt, but also includes recourse to the investment manager, included in the reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). + References No definition available. + Details
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