Variable Interest Entities - Unconsolidated VIEs (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Variable Interest Entities
Unconsolidated VIE assets	$ 478.3	$ 714.8
Unconsolidated VIE liabilities	549.3	732.4
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entities
Unconsolidated VIE assets	722.6	795.5
Unconsolidated VIE liabilities	298.4	323.6
Equity interests on the Condensed Consolidated Balance Sheets	4.2	4.8
Maximum risk of loss	$ 4.2	$ 5.0