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Variable Interest Entities - Consolidated VIEs (Details) - USD ($) $ in Millions	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Carrying amounts of consolidated VIE assets and liabilities
Total assets	$ 293,220.2		$ 304,657.2
Total liabilities	281,873.1		288,198.9
Redeemable noncontrolling interest	268.5	$ 306.8	332.5	$ 330.6	$ 263.5	$ 255.6
Aggregate consolidated variable interest entities
Carrying amounts of consolidated VIE assets and liabilities
Total assets	33,766.3		37,269.2
Total liabilities	30,954.9		34,360.7
Redeemable noncontrolling interest	240.8		304.0
Mandatory retirement savings funds
Carrying amounts of consolidated VIE assets and liabilities
Total assets	31,182.4		34,687.0
Total liabilities	30,866.2		34,301.8
Real estate VIE
Carrying amounts of consolidated VIE assets and liabilities
Total assets	575.0		709.6
Total liabilities	38.1		36.1
Sponsored investment funds
Carrying amounts of consolidated VIE assets and liabilities
Total assets	479.6		609.4
Total liabilities	5.7		2.5
Redeemable noncontrolling interest	240.8		304.0
Residential mortgage loans VIE
Carrying amounts of consolidated VIE assets and liabilities
Total assets	1,529.3		1,263.2
Total liabilities	$ 44.9		$ 20.3

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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