Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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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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Nominal or face amount used to calculate payment on derivative.

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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Investments - Derivative Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Derivative [Line Items]
Derivative gain (loss) reclassified from other comprehensive income into shareholders' net income
Derivative gain (loss) recognized in other comprehensive income
Derivative gain (loss) recognized in the income statement
Designated as Hedging Instrument \| Fair Value Hedging \| Fair value hedge - Interest rate swap contracts
Derivative [Line Items]
Notional Value	$ 3,000		$ 2,700