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Derivative Financial Instruments - Notional Amounts and Credit Exposure (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Derivative Financial Instruments, exposure |  |
Cash and securities posted under collateral arrangements associated with derivative credit support agreements and Futures Commission Merchant agreements | $ 528.5 | $ 533.7
Aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a liability position | 561.1 | 472.3
Collateral and initial margin posted supporting derivatives with credit-risk-related contingent features that were in a liability position | 528.5 | 533.7
Additional collateral required to be posted if derivative credit-risk-related contingent features were triggered | 111.3 |
Cash collateral received associated with derivative credit support annex agreements and Futures Commission Merchant agreements | 434.4 | 358.9
Notional amount | 105,642.7 | 101,572.1
Gross credit exposure | 777.6 | 664.3
Less: collateral received | 519.8 | 450.3
Net credit exposure | 257.8 | 214.0
Interest rate swaps |  |
Derivative Financial Instruments, exposure |  |
Cash exchanged under contract | 0.0 |
Principal payments made under contract | 0.0 |
Notional amount | 61,351.4 | 60,776.6
Gross credit exposure | 15.3 | 10.0
Interest rate options |  |
Derivative Financial Instruments, exposure |  |
Notional amount | 4,635.0 | 4,735.0
Gross credit exposure | 12.8 | 28.1
Interest rate forwards |  |
Derivative Financial Instruments, exposure |  |
Notional amount | 1,587.0 | 2,125.6
Interest rate futures |  |
Derivative Financial Instruments, exposure |  |
Notional amount | 1,887.7 | 845.0
Currency swaps |  |
Derivative Financial Instruments, exposure |  |
Notional amount | 3,194.6 | 2,883.8
Gross credit exposure | 121.9 | 191.4
Currency forwards |  |
Derivative Financial Instruments, exposure |  |
Notional amount | 1,003.0 | 981.2
Gross credit exposure | 16.4 | 7.6
Equity options |  |
Derivative Financial Instruments, exposure |  |
Notional amount | 5,864.7 | 4,380.1
Gross credit exposure | 607.9 | 388.1
Equity futures |  |
Derivative Financial Instruments, exposure |  |
Notional amount | 1,198.7 | 852.5
Credit default swaps |  |
Derivative Financial Instruments, exposure |  |
Notional amount | 338.3 | 375.0
Gross credit exposure | 3.2 | 4.0
Total return swaps | Equity contracts |  |
Derivative Financial Instruments, exposure |  |
Notional amount |  | 775.3
Gross credit exposure |  | 20.8
Total return swaps | Credit contracts |  |
Derivative Financial Instruments, exposure |  |
Notional amount | 500.0 | 250.0
Gross credit exposure | 0.1 | 14.3
Embedded derivative financial instruments |  |
Derivative Financial Instruments, exposure |  |
Notional amount | $ 24,082.3 | $ 22,592.0

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- Definition The carrying value as of the balance sheet date of the cash received as collateral associated with derivative credit support annex agreements and Futures Commission Merchant agreements. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the cash and securities pledged as collateral associated with derivative credit support agreements and Futures Commission Merchant agreements. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the cash and securities received as collateral associated with derivative credit support agreements. + References No definition available. + Details
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- Definition The amount at risk if a counterparty to the derivative instruments does not perform. + References No definition available. + Details
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- Definition The amount at risk if a counterparty to the derivative instrument does not perform, after considering collateral received. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 185 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-185 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4H -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4H + Details
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 185 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-185 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4H -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4H + Details
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- Definition The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 185 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-185 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4H -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4H + Details
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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 181 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-181 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A + Details
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