SHARE-BASED AWARDS, Compensation Cost and Other Measures (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Share-based expense (net of estimated forfeitures):
Total share-based expense	$ 8	$ 9	$ 11
Total recognized tax benefit	(3)	(3)	(3)
Share-based expense (net of tax)	5	6	8
Stock Options [Member]
Share-based expense (net of estimated forfeitures):
Total share-based expense	2	4	3
Cash received upon option exercise	7	0	2
Intrinsic value of options exercised	2	0	1
Tax benefit realized upon option exercise	1	0	1
Total unrecognized compensation cost	2.2
Weighted average period of recognition (in years)	1.5
Non-Vested Stock & Restricted Stock Units [Member]
Share-based expense (net of estimated forfeitures):
Total share-based expense	6	5	8
Fair value of stock vested	4	3	13
Total unrecognized compensation cost	$ 8.0
Weighted average period of recognition (in years)	1.5

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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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.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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The total fair value of equity-based awards 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.

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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.

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