Basis of Presentation and Accounting Policies (Details) - Corvus [Member] $ in Millions	Jan. 02, 2024 USD ($)
Business Acquisition
Approximate consideration transferred in acquisition of Corvus Insurance Holdings, Inc.	$ 427
Assets acquired from Corvus at acquisition date	478
Liabilities assumed as part of Corvus acquisition	51
Identifiable intangible assets and goodwill recorded as part of Corvus acquisition	390
Deferred tax asset recorded as a result of Corvus acquisition	$ 19

Amount of identifiable intangible assets and goodwill, acquired at the acquisition date.

No definition available.

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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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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of assets acquired at the acquisition date.

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Amount of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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