INCENTIVE PLANS (Weighted-Average Fair Value and Weighted-Average Assumptions Used in Estimating Fair Value of Grants) (Details) - $ / shares	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
INCENTIVE PLANS [Abstract]
Fair value	$ 43.72	$ 43.01	$ 29.20
Risk-free interest rate	2.90%	2.36%	1.66%
Dividend yield	1.39%	1.27%	1.39%
Volatility	31.49%	31.35%	30.42%
Expected term	9 years	9 years	9 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 risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Weighted average expected volatility rate of share-based compensation awards.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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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://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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