Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Repurchase Reserve	$ 62	$ 79
Litigation and Regulatory Matters
Loss Contingencies [Line Items]
Legal fees	39	$ 39
Min | Litigation and Regulatory Matters
Loss Contingencies [Line Items]
Reasonably possible loss	2
Max | Litigation and Regulatory Matters
Loss Contingencies [Line Items]
Reasonably possible loss	$ 9