SHARE-BASED COMPENSATION SHARE-BASED COMP - Narrative - (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 109
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	84
Options and SARS Fair Value of Vested	22
Share-based compensation expense	7	6
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options	2
Restricted Stock and RSU Fair Value Released	13
Restricted Stock or Unit Expense	14	9
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Total Share-based Liabilities Paid	10	6
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	2
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Operating Activities	$ 1
Third Amended 2003 Plan [Member] \| Options and SARs [Member]
OptionsAndSarsOutstandingWeightedAverageContractualLives	6 years 11 months 5 days
OptionsAndSarsExercisableWeightedAverageContractualLives	6 years 6 months 22 days

The weighted average period between the balance sheet date and expiration for options and SARs exercisable.

No definition available.

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The total fair value of options and SARs that have vested.

+ References

No definition available.

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The weighted average period between the balance sheet date and expiration for options and SARs oustanding.

+ References

No definition available.

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- Definition

The total fair value of restricted stock and RSUs for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

No definition available.

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- Definition

Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (j)

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-Publisher FASB

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-Number 123R

-Paragraph A240

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- Definition

Amount of excess tax benefit (tax deficiency) that arises when compensation cost from non-qualified equity-based compensation recognized on the entity's tax return exceeds (is less than) compensation cost from equity-based compensation recognized in financial statements. Excess tax benefit (tax deficiency) reduces (increases) net cash provided by operating activities.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 20

-Section 55

-Paragraph 24

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The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The liabilities paid during the accounting period for equity-based compensation.

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- Definition

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.

+ References

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

+ References

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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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