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Derivative Financial Instruments and Hedging Activities - Schedule of Notional Amounts (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional amount	$ 26,369.8	$ 16,925.4
Swaps
Derivative [Line Items]
Notional amount	1,660.3	684.5
Futures, forwards and spot
Derivative [Line Items]
Notional amount	7,355.5	5,467.8
Written options
Derivative [Line Items]
Notional amount	8,954.8	5,578.1
Purchased options
Derivative [Line Items]
Notional amount	$ 8,399.2	$ 5,195.0

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+ References

No definition available.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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