Derivative Instruments - Balance Sheet Offsetting (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Cash collateral
Cash collateral posted	$ 122.4	$ 13.9
Cash collateral received		13.2
Offsetting derivative assets
Gross amount recognized on the balance sheet	74.8	120.0
Gross amount not offset on the balance sheet	(17.5)	(15.2)
Net amount	57.3	104.8
Cash collateral received		6.4
Offsetting derivative liabilities
Gross amount recognized on the balance sheet	96.6	15.1
Gross amount not offset on the balance sheet	(82.5)	(9.2)
Net amount	14.1	5.9
Cash collateral posted	$ 65.0	$ 0.4

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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