Restructuring and Other Special Charges (Credits), Net - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring And Related Activities [Abstract]
Restructuring and other special charges (credits), net	$ 1	$ (12)	$ 68
Unrecoverable, cost and expenses	19
Severance costs	5
Favorable adjustment to a legal settlement	22
Favorable adjustment to a legal reserve		11	70
Credit associated with the reversal restructuring accruals no longer deemed necessary			2
Loss contingency accruals	$ 20	$ 78

Restructuring And Other Special Charges (Credits)

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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Amount of loss contingency liability.

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Amount of increase (decrease) in loss contingency liability.

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Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Amount of (gain) loss recognized in the income statement for an event or transaction that is unusual in nature or occurs infrequently, but not both.

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