Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Loss Contingencies [Line Items]
Legal Fees (Recoveries), net	$ 15	$ 8	$ 34	$ 29
Repurchase Reserve	74		74		$ 79
Litigation and regulatory matters | Min
Loss Contingencies [Line Items]
Estimate of possible loss	1		1
Litigation and regulatory matters | Max
Loss Contingencies [Line Items]
Estimate of possible loss	$ 3		$ 3