Asset-Backed Financing - Schedule Of Secured Notes With Related Maturity (Details) - Variable Interest Entity, Primary Beneficiary - Secured Debt - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Weighted average interest rate at date of issuance	1.36%	2.39%
Secured Notes Issued August 2021
Debt Instrument [Line Items]
Company issued secured notes	$ 575,000,000
Weighted average interest rate at date of issuance	0.42%
Secured Notes Issued February 2021
Debt Instrument [Line Items]
Company issued secured notes	$ 600,000,000
Weighted average interest rate at date of issuance	0.30%
Secured Notes Issued May 2020 1
Debt Instrument [Line Items]
Company issued secured notes	$ 750,178,000
Weighted average interest rate at date of issuance	3.38%
Secured Notes Issued May 2020
Debt Instrument [Line Items]
Company issued secured notes	$ 500,000,000
Weighted average interest rate at date of issuance	2.37%
Secured Notes Issued April 2020
Debt Instrument [Line Items]
Company issued secured notes	$ 300,000,000
Weighted average interest rate at date of issuance	3.30%
Secured Notes Issued January 2020
Debt Instrument [Line Items]
Company issued secured notes	$ 525,000,000
Weighted average interest rate at date of issuance	1.83%
Secured Notes Issued June 2019
Debt Instrument [Line Items]
Company issued secured notes	$ 525,000,000
Weighted average interest rate at date of issuance	2.37%
Secured Notes Issued May 2019
Debt Instrument [Line Items]
Company issued secured notes	$ 500,000,000
Weighted average interest rate at date of issuance	3.05%