Claims, Lawsuits and Other Contingencies (Details) - Australian Proceedings $ in Billions	1 Months Ended	6 Months Ended
	Nov. 30, 2023 plaintiff	Sep. 30, 2025 USD ($)
Loss Contingencies [Line Items]
Loss contingency, damages sought plus interest and costs | $		$ 5
Credit Suisse
Loss Contingencies [Line Items]
Loss contingency, number of loss payees | plaintiff	2