SHARE-BASED COMPENSATION - Stock Options Outstanding and Exercisable (Detail) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options Outstanding - Stock Option Shares	14,451
Options Outstanding - Weighted-Average Remaining Term (Yrs)	4 years 10 months
Options Outstanding - Aggregate Intrinsic Value	$ 50
Options Outstanding - Weighted-Average Exercise Price Per Share	$ 43.60
Options Exercisable - Stock Option Shares	12,056
Options Exercisable - Weighted-Average Remaining Term (Yrs.)	4 years 1 month
Options Exercisable - Aggregate Intrinsic Value	$ 48
Options Exercisable - Weighted-Average Exercise Price Per Share	$ 42.62

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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