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.

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Amount of labor-related expenses classified as other.

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Period 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, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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).

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The percent of target applied to determine the number of units paid for performance share awards.

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INCENTIVE PLANS (Narrative) (Details) - USD ($)	12 Months Ended
INCENTIVE PLANS (Narrative) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Officers And Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense provision under cash-based compensation plans	$ 24,403,000	$ 32,169,000	$ 26,325,000
Division Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense provision under cash-based compensation plans	10,877,000	14,589,000	11,687,000
Non-Incentive Eligible Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense provision under cash-based compensation plans	6,716,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 16,272,000	$ 12,074,000	$ 13,159,000
Weighted-average Grant Date Fair Value, Granted	$ 117.49	$ 87.73	$ 74.85
SOSARs And Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 3,723,000	$ 2,744,000	$ 2,221,000
Share-based compensation plans vesting period (in years)	4 years
Share-based compensation plans expiration period (in years)	10 years
SOSARs And Stock Options [Member] \| 2017 Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation plans vesting period (in years)	3 years
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 4,371,000	$ 3,004,000	$ 982,000
Weighted-average Grant Date Fair Value, Granted	$ 117.49
Restricted Shares [Member] \| Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average Grant Date Fair Value, Granted		$ 87.77	$ 74.85
Deferred Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 2,260,000	$ 2,848,000	$ 1,886,000
Deferred Stock Units [Member] \| 2015 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation plans vesting period (in years)	3 years
Minimum [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units paid target range	0.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares that may be issued	8,000,000
Maximum [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units paid target range	200.00%