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STOCK-BASED COMPENSATION (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2012 plan | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Stock options | Sep. 30, 2012 Stock options | Jun. 30, 2012 Stock options | Mar. 31, 2012 Stock options | Dec. 31, 2012 2011 Omnibus Incentive Plan | Dec. 31, 2012 2011 Omnibus Incentive Plan Stock options | Dec. 31, 2012 2011 Omnibus Incentive Plan Stock options Maximum | Dec. 31, 2012 2009 Directors Plan | Dec. 31, 2012 2009 Directors Plan Minimum | Jun. 30, 2009 2009 Directors Plan Stock options, non-employee directors Y | Dec. 31, 2012 2009 Directors Plan Stock options, non-employee directors
Stock-based compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation plans | 2 |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount of common stock authorized (in shares) |  |  |  |  |  |  |  | 14,500,000 |  |  | 1,600,000 |  |  |
Reduction in number of shares for each share granted |  |  |  |  |  |  |  | 2.16 |  |  |  |  |  |
Percentage of award vesting on the last business day prior to the date of the annual meeting |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |
Percentage of closing price of the company's common stock on the date an option is granted to determine the exercise price |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |
Vesting period (in years) |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |
Tenure of award (in years) |  |  |  |  |  |  |  |  |  | P10Y |  |  |  |
The period during which awards can be granted, effective June 4, 2009 (in years) |  |  |  |  |  |  |  |  |  |  |  |  | 10 |
Common stock granted, net of cancellations (in shares) |  |  |  | 53,000 | 207,000 | 65,000 | 120,000 | 1,599,105 |  |  |  |  |  | 59,665
Shares available for grant |  |  |  |  |  |  |  | 11,884,455 |  |  |  |  |  | 1,540,335
Compensation expense on share-based plans | $ 28.4 | $ 19.4 | $ 16.9 |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents the reduction in number of shares authorized for each share granted or issued with respect to a Full Value Award. A Full Value Award is an award other than an incentive stock option, a non-qualified stock option, or a stock appreciation right, which is settled by the issuance of shares. + References No definition available. + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -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. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -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. + Details
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- Definition The date when the equity-based award expires as specified in the award agreement, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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