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Fair Value Measurements and Derivative Instruments (Credit Features) (Details) $ in Millions | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) derivative
--- | --- | ---
Derivative instruments disclosure |  |
Number of derivatives requiring collateral to be posted | derivative |  | 7
Collateral |  | $ 91.0
Interest contracts |  |
Derivative instruments disclosure |  |
Collateral |  | $ 57.3
Scenario, Forecast |  |
Derivative instruments disclosure |  |
Collateral | $ 33.3 |

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- Definition Amount of assets pledged to secure a debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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