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

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Investments - Derivative Financial Instruments (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
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 \| Interest Rate Swap
Derivative [Line Items]
Notional Value	$ 3,800		$ 3,200