STOCK-BASED COMPENSATION - Summary of Assumptions used in Total Stockholder Return-Based Stock Units Valuation (Details) - TSR Units [Member]	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assumptions used in fair value valuation
Expected Service Period			3 years
Expected Dividend Yield (assuming full reinvestment)	0.00%	0.00%	0.00%
Minimum [Member]
Assumptions used in fair value valuation
Risk Free Interest Rate	0.78%	0.87%	1.07%
Expected Stock Price Volatility	27.40%	23.55%	24.14%
Expected Service Period	2 years 3 months 18 days	2 years 6 months
Maximum [Member]
Assumptions used in fair value valuation
Risk Free Interest Rate	1.60%	1.31%	1.09%
Expected Stock Price Volatility	28.42%	27.02%	24.22%
Expected Service Period	3 years	3 years

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: 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.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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