Variable Interest Entities - Assets and Liabilities and Associated Maximum Loss Exposure of Alternative Energy Partnership Investments (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Other assets	$ 530,000,000.0	$ 592,200,000
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Cash	3,000,000.0
Equipment, net of depreciation	261,700,000
Other assets	5,100,000
Total unconsolidated assets	269,700,000
Maximum loss exposure	$ 16,300,000