Investments in Loans and Financing Receivables - Schedule of Allowance for Credit Losses Related to Loans and Financing Receivable (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	$ 4.9
Provision for credit losses	106.8
Initial allowance for PCD assets	1.8
Write-offs	(1.8)
Foreign currency remeasurement	(0.2)
Allowance for credit losses, ending balance	111.5
Spirit Realty Capital, Inc.
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Initial allowance for PCD assets	1.8
Loans Receivable
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	2.5
Provision for credit losses	10.0
Initial allowance for PCD assets	1.8
Write-offs	(1.8)
Foreign currency remeasurement	(0.2)
Allowance for credit losses, ending balance	12.3
Financing Receivable
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	2.4
Provision for credit losses	96.8
Initial allowance for PCD assets	0.0
Write-offs	0.0
Foreign currency remeasurement	0.0
Allowance for credit losses, ending balance	$ 99.2