Derivative Instruments - Summary of Gross Fair Values of Individual Derivative Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Derivative, Collateral, Right to Reclaim Cash	$ 18	$ 23
Net Amounts of Assets Presented in the Consolidated Balance Sheet, Derivative Assets	21	26
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Derivative Liabilities	29	35
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	28
Gross Amount of Collateral Received/Pledged Not Offset in the Consolidated Balance Sheet, Derivative Liabilities		35
Net Amount, Derivative Assets	21	26
Derivative Asset, Fair Value, Gross Asset	21	26
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative liabilities	29	35
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Derivative Liabilities Net Amount	0	0
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Net Amounts of Assets Presented in the Consolidated Balance Sheet, Derivative Assets	21	25
Derivative Asset, Fair Value, Amount Not Offset Against Collateral		0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Derivative Liabilities	29	35
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	28	35
Net Amount, Derivative Assets	21	25
Derivative Asset, Fair Value, Gross Asset	21	25
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative liabilities	29	35
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Derivative Liabilities Net Amount	0	0
Warrants [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	1	1
Derivative Asset, Fair Value, Gross Asset	1	1
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Variable Interest Entity, Primary Beneficiary [Member]
Derivatives, Fair Value [Line Items]
Net Amounts of Assets Presented in the Consolidated Balance Sheet, Derivative Assets	221	226
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	221	226
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Derivative Liabilities	1,170	1,197
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	0
Gross Amount of Collateral Received/Pledged Not Offset in the Consolidated Balance Sheet, Derivative Liabilities		0
Net Amount, Derivative Assets	0	0
Derivative Asset, Fair Value, Gross Asset	221	226
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative liabilities	1,170	1,197
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Derivative Liabilities Net Amount	1,170	1,197
Variable Interest Entity, Primary Beneficiary [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Net Amounts of Assets Presented in the Consolidated Balance Sheet, Derivative Assets	186	190
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	186	190
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Derivative Liabilities	1,170	1,197
Net Amount, Derivative Assets	0	0
Derivative Asset, Fair Value, Gross Asset	186	190
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative liabilities	1,170	1,197
Derivative Liabilities Net Amount	1,170	1,197
Variable Interest Entity, Primary Beneficiary [Member] | Currency Swaps [Member]
Derivatives, Fair Value [Line Items]
Net Amounts of Assets Presented in the Consolidated Balance Sheet, Derivative Assets	35	36
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	35	36
Net Amount, Derivative Assets	0	0
Derivative Asset, Fair Value, Gross Asset	35	$ 36
Derivative Asset, Fair Value, Amount Offset Against Collateral	$ 0