Unconsolidated Affiliates - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Carrying Value	$ 328.4	$ 345.2
Distributions received return on investment	13.1	21.2	$ 2.3
Recorderd distribution in investing activities	$ 25.3	(0.3)	66.2
International Financial Data Services L.P. [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
Amortization period	15 years
Carrying Value	$ 60.2	68.3
International Financial Data Services L.P. [Member] | State Street [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
IFDS L.P. and Kansas City Downtown Hotel Group, L.L.C [Member]
Schedule of Investments [Line Items]
Distributions received from unconsolidated affiliates	$ 10.5	22.5
PRDC, LLC [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
Amortization period	28 years
Distributions received from unconsolidated affiliates			$ 64.5
Broadway Square Partners [Member]
Schedule of Investments [Line Items]
Ownership Percentage	50.00%
Amortization period	40 years
Carrying Value	$ 52.2	53.4
Orbit Private Investments L.P. [Member]
Schedule of Investments [Line Items]
Ownership Percentage	9.80%
Carrying Value	$ 203.9	$ 211.6
Distributions received return on investment	2.4
Distributions received from unconsolidated affiliates	26.9
Recorderd distribution in investing activities	$ 24.5