Business Developments and Risks and Uncertainties (Schedule of Discontinued Operations Components of Assets and Liabilities Held for Sale) (Detail) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Assets held for sale
Accounts receivable	$ 2	$ 1
Goodwill	11	11
Other assets	1	2
Loss on disposal group	(4)	(3)
Total assets held for sale	10	11
Liabilities held for sale
Accounts payable	1	1
Debt	1	1
Accrued expenses and other	5	5
Total liabilities held for sale	$ 7	$ 7

Disposal group including discontinued operation debt.

No definition available.

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- Definition

Disposal group including discontinued operation loss on disposal group current.

+ References

No definition available.

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- Definition

Amount classified as assets attributable to disposal group held for sale or disposed of.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 10
-SubTopic 20
-Topic 205
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of.

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Amount classified as accounts payable attributable to disposal group held for sale or disposed of.

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Amount classified as goodwill attributable to disposal group held for sale or disposed of.

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Amount classified as other assets attributable to disposal group held for sale or disposed of.

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Amount classified as other liabilities attributable to disposal group held for sale or disposed of.

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Amount classified as liabilities attributable to disposal group held for sale or disposed of.

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