SHARE-BASED COMPENSATION (DETAILS 3) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding - beginning of year	2,318
Options granted	0
Options exercised	(650)
Options expired	0
Options outstanding - end of year	1,668	2,318
Options exercisable	1,668	2,318
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price [Roll Forward Abstract]
Weighted Average Exercise Price - options outstanding beginning of year	$ 22.26
Weighted Average Exercise Price - options granted	$ 0
Weighted Average Exercise Price - options exercised	$ 15.98
Weighted Average Exercise Price - options expired	$ 0
Weighted Average Exercise Price - options outstanding end of year	$ 24.71	$ 22.26
Weighted Average Exercise Price - options exercisable end of year	$ 24.71	$ 22.26
Weighted Average of Remaining Contractual Term - options outstanding end of year	2.09
Weighted Average of Remaining Contractual Term - options exercisable end of year	2.09
Aggregate Intrinsic Value - options outstanding end of year	$ 12,095,000
Aggregate Intrinsic Value - options exercisable end of year	12,095,000
Intrinsic value of options exercised during the period	9,000,000	4,000,000
Option exercised - option proceeds received	$ 5,000,000	$ 8,000,000

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

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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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The weighted average period between the balance sheet date and expiration for all vested portions of options outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years.

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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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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Gross number of share options (or share units) granted during the period.

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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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As of the balance sheet date, the total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of fully vested and expected to vest options outstanding.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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The weighted-average period between the balance sheet date and expiration date for fully vested and expected to vest options outstanding, which may be expressed in a decimal value for number of years.

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Number of share options (or share units) exercised during the current period.

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