Derivative Instruments - Summary of Gross Fair Values of Individual Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 30, 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	18	26
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Derivative Liabilities	26	35
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	25
Gross Amount of Collateral Received/Pledged Not Offset in the Consolidated Balance Sheet, Derivative Liabilities		35
Net Amount, Derivative Assets	18	26
Derivative Asset, Fair Value, Gross Asset	18	26
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative liabilities	26	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	18	25
Derivative Asset, Fair Value, Amount Not Offset Against Collateral		0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Derivative Liabilities	25	35
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	25	35
Net Amount, Derivative Assets	18	25
Derivative Asset, Fair Value, Gross Asset	18	25
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative liabilities	25	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
Foreign Exchange Future
Derivatives, Fair Value [Line Items]
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Derivative Liabilities	0
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	0
Derivative liabilities	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	0
Derivative Liabilities Net Amount	0
Variable Interest Entity, Primary Beneficiary [Member]
Derivatives, Fair Value [Line Items]
Net Amounts of Assets Presented in the Consolidated Balance Sheet, Derivative Assets	208	226
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	208	226
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Derivative Liabilities	1,136	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	208	226
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative liabilities	1,136	1,197
Derivative Liability, Fair Value, Amount Offset Against Collateral	0	0
Derivative Liabilities Net Amount	1,136	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	174	190
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	174	190
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Derivative Liabilities	1,136	1,197
Net Amount, Derivative Assets	0	0
Derivative Asset, Fair Value, Gross Asset	174	190
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative liabilities	1,136	1,197
Derivative Liabilities Net Amount	1,136	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	34	36
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	34	36
Net Amount, Derivative Assets	0	0
Derivative Asset, Fair Value, Gross Asset	34	$ 36
Derivative Asset, Fair Value, Amount Offset Against Collateral	$ 0