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Commitments, Contingencies, Guarantees and Others - Litigation (Details) $ in Millions	1 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2025 USD ($) claim	Feb. 25, 2025 claim
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss		$ 300
Litigation settlement, loss	$ 5,500
Cybersecurity Incident
Loss Contingencies [Line Items]
Number of consumer class action cases filed for cybersecurity incident | claim		4	2

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- Definition

Number of consumer class action cases filed for Cybersecurity Incident

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Amount of loss from litigation settlement for amount awarded to other party. Excludes claims within an insurance entity's normal claims settlement process.

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