Derivative Financial Instruments - Offsetting (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Derivative Financial Instruments
Cash collateral rehypothecated	$ 3	$ 7
Potential reduction in net position of total derivative liabilities	352	235
Potential reduction in net position of total derivative assets	352	235
Foreign Exchange Call Option
Derivative Financial Instruments
Realized gain (loss) on derivatives	(68)
Unrealized gain (loss) on derivatives		12
Fair value of derivatives	0	62
Other Receivables
Derivative Financial Instruments
Right to reclaim cash collateral	29	11
Accounts Payable
Derivative Financial Instruments
Obligation to return cash collateral	$ 3	$ 7

This item represents the amount of cash collateral rehypothecated as of the balance sheet date.

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Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and contract can be net settled by means outside contract or delivery of asset, subject to master netting arrangement or similar agreement and not elected or qualified to offset, deducted from derivative asset.

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Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

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Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.

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Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and contract can be net settled by means outside contract or delivery of asset, subject to master netting arrangement or similar agreement and not elected or qualified to offset, deducted from derivative liability.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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