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Variable Interest Entities (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Variable Interest Entity [Line Items]
Total Assets	$ 1,785.8	$ 2,228.9	$ 2,224.0
BKFC \| Payment Guarantee
Variable Interest Entity [Line Items]
Guarantor obligation, term	3 years
BKFC \| Payment Guarantee \| Minimum
Variable Interest Entity [Line Items]
Guarantor obligations	$ 42.4
BKFC \| Payment Guarantee \| Maximum
Variable Interest Entity [Line Items]
Guarantor obligations	77.1
Variable Interest Entity, Not Primary Beneficiary \| Investments in unconsolidated affiliates
Variable Interest Entity [Line Items]
Total Assets	254.2	244.4
Maximum Exposure	254.2	244.4
Variable Interest Entity, Not Primary Beneficiary \| Other long-term investments and non-current assets
Variable Interest Entity [Line Items]
Total Assets	7.5	4.4
Maximum Exposure	$ 7.5	$ 4.4