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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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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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Amount of increase (decrease) in carrying value of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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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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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the 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 increase (decrease) during the reporting period in other obligations or expenses incurred but not yet paid.

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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		3 Months Ended	6 Months Ended
Acquisitions - Narrative (Details) - USD ($) $ in Millions	Feb. 01, 2019	Jun. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 120	$ 120	$ 23
Goodwill adjustment			55
Pacific Union
Business Acquisition [Line Items]
Cash consideration	$ 116
Goodwill	40	40	40
Increase to payables and other liabilities		11
Increase to fair value of intangible assets		(2)
Property and equipment wrote off		2
Goodwill adjustment		11
Acquisition costs		2	4
Revenue since acquisition		79	118
Income from acquisition		36	50
Salaries, Wages and Benefits \| Pacific Union
Business Acquisition [Line Items]
Acquisition costs		1	2
General and Administrative Expense \| Pacific Union
Business Acquisition [Line Items]
Acquisition costs		1	2
Originations Segment \| Pacific Union
Business Acquisition [Line Items]
Goodwill		28	28
Servicing Segment \| Pacific Union
Business Acquisition [Line Items]
Goodwill		$ 12	$ 12
Minimum \| Pacific Union
Business Acquisition [Line Items]
Change in contingent consideration	0
Maximum \| Pacific Union
Business Acquisition [Line Items]
Change in contingent consideration	$ 16