STOCK-BASED COMPENSATION PLANS - Restricted Stock Activity and Incentive Stock Awards Activity (Details) - $ / shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding, beginning of period (in dollars per share)	$ 75.51	$ 78.76	$ 72.18
Granted (in dollars per share)	70.61	73.76	86.66
Vested (in dollars per share)	71.65	81.55	70.34
Adjustment for incentive stock awards expected to vest (in dollars per share)	78.04	74.62	73.69
Canceled (in dollars per share)	74.04	78.60	76.61
Outstanding, end of period (in dollars per share)	$ 73.64	$ 75.51	$ 78.76
Restricted Stock and Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, beginning of period (in shares)	445,089	399,000	396,295
Granted (in shares)	608,813	224,060	153,516
Vested (in shares)	(235,406)	(148,644)	(137,088)
Adjustment for incentive stock awards expected to vest (in shares)	0	0	0
Canceled (in shares)	(27,465)	(29,327)	(13,723)
Outstanding, end of period (in shares)	791,031	445,089	399,000
Incentive Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, beginning of period (in shares)	415,242	327,333	424,750
Granted (in shares)	259,950	175,100	157,025
Vested (in shares)	(119,835)	(93,312)	(153,271)
Adjustment for incentive stock awards expected to vest (in shares)	80,403	32,996	(87,592)
Canceled (in shares)	(63,758)	(26,875)	(13,579)
Outstanding, end of period (in shares)	572,002	415,242	327,333

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(3)
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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB
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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB
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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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-Publisher FASB
-Name Accounting Standards Codification
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan 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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-Publisher FASB
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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options net performance adjustment weighted average net performance adjustment fair value.

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Share based compensation arrangement by share based payment award equity instruments other than options nonvested number expected to vest.

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No definition available.

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