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Goodwill - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022
Goodwill [Line Items]
Goodwill impairment loss	$ 230,000,000	$ 0	$ 230,000,000
Goodwill		$ 67,000,000	0	$ 116,000,000
Exceeded carrying value		13.00%
Goodwill impairment tax benefit			$ 0
Minimum [Member]
Goodwill [Line Items]
Exceeded carrying value			11.50%
Maximum [Member]
Goodwill [Line Items]
Exceeded carrying value			12.80%

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- Definition

Goodwill impairment tax benefit.

+ References

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- Definition

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.

+ References

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Amount of loss from the write-down 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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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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Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

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