Debt (Tower Securities - Schedule of Material Terms of Debt Repaid) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Amount Outstanding	$ 13,672,750,000	$ 12,388,000,000
2018-1C Tower Securities [Member]
Debt Instrument [Line Items]
Issue Date	Mar. 09, 2018
Amount Outstanding	$ 640,000,000.0
Interest Rate	3.448%
Anticipated Repayment Date	Mar. 09, 2023
Actual Repayment Date	Dec. 15, 2022
Deferred financing fees	$ 8,600,000
Deferred financing fees and accrued interest	$ 400,000
2014-2C Tower Securities [Member]
Debt Instrument [Line Items]
Issue Date	Oct. 15, 2014
Amount Outstanding	$ 620,000,000.0	$ 620,000,000
Interest Rate	3.869%
Anticipated Repayment Date	Oct. 08, 2024
Actual Repayment Date	Oct. 08, 2024
Deferred financing fees	$ 9,000,000.0
Deferred financing fees and accrued interest	$ 200,000