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Derivative Financial Instruments - Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Effect of derivatives not designated as hedging instruments on the consolidated statements of operations |  |
Amount of gain (loss) recognized in net income on derivatives | $ 104.3 | $ 263.2
Interest rate contracts |  |
Effect of derivatives not designated as hedging instruments on the consolidated statements of operations |  |
Amount of gain (loss) recognized in net income on derivatives | (160.4) | 500.4
Foreign exchange contracts |  |
Effect of derivatives not designated as hedging instruments on the consolidated statements of operations |  |
Amount of gain (loss) recognized in net income on derivatives | 1.1 | (56.9)
Equity contracts |  |
Effect of derivatives not designated as hedging instruments on the consolidated statements of operations |  |
Amount of gain (loss) recognized in net income on derivatives | (24.8) | 177.1
Credit contracts |  |
Effect of derivatives not designated as hedging instruments on the consolidated statements of operations |  |
Amount of gain (loss) recognized in net income on derivatives | (0.3) | 2.4
Other contracts |  |
Effect of derivatives not designated as hedging instruments on the consolidated statements of operations |  |
Amount of gain (loss) recognized in net income on derivatives | $ 288.7 | $ (359.8)

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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