Debt - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Secured Debt
Debt [Line Items]
Weighted average interest rate (as a percent)	5.17%
Issuance costs	$ 95,000,000	$ 82,000,000
Secured Debt | Securitization notes payable
Debt [Line Items]
Weighted average interest rate (as a percent)	5.30%
Face amount of debt	$ 24,800,000,000
Secured Debt | Revolving credit facilities
Debt [Line Items]
Renewed credit facilities	$ 27,400,000,000
Secured Debt | Maximum | Revolving credit facilities
Debt [Line Items]
Expiration period (in years)	3 years
Senior Notes
Debt [Line Items]
Weighted average interest rate (as a percent)	4.20%
Face amount of debt	$ 55,100,000,000
Senior Notes | Senior Notes with Maturity Dates from 2026 to 2034
Debt [Line Items]
Weighted average interest rate (as a percent)	5.39%
Face amount of debt	$ 12,500,000,000
Unsecured Debt
Debt [Line Items]
Issuance costs	$ 134,000,000	$ 125,000,000
Line of Credit
Debt [Line Items]
Weighted average interest rate (as a percent)	7.15%
Debt instrument term (in years)	5 years