Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Loss Contingencies [Line Items]
Legal Fees (Recoveries), net	$ 8	$ 7	$ 29	$ 15
Repurchase Reserve	81		81		$ 22
Litigation and regulatory matters | Min
Loss Contingencies [Line Items]
Estimate of possible loss	2		2
Litigation and regulatory matters | Max
Loss Contingencies [Line Items]
Estimate of possible loss	$ 3		$ 3