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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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Acquisitions - Narrative (Details) - USD ($) $ in Millions	Jan. 01, 2023	Dec. 19, 2022	Aug. 09, 2022	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Business Acquisition [Line Items]
Goodwill				$ 4,830	$ 4,635	$ 4,602
TitlePoint
Business Acquisition [Line Items]
Cash consideration	$ 224
Goodwill	165
Fair value estimates for other intangibles	54
Fair value estimate for other assets	$ 6
AllFirst Title Insurance Agency
Business Acquisition [Line Items]
Cash consideration		$ 10	$ 130
Goodwill			104
Fair value estimates for other intangibles			$ 55
Percentage of outstanding equity acquired		6.00%	74.00%
Preliminary fair value allocation, other intangible assets			$ 55
Preliminary fair value allocation, other assets			40
Preliminary fair value allocation, other liabilities			18
Preliminary fair value allocation, noncontrolling interest			$ 46