INCENTIVE PLANS (Tables)

12 Months Ended

Dec. 31, 2019

Aggregate Values for Distributed Restricted Share Awards

in thousands	2019	2018	2017
Aggregate value of distributed
restricted shares	$        2,417	$        1,345	$        7,685

Weighted-Average Fair Value and Weighted-Average Assumptions Used in Estimating Fair Value of Grants

	2019	2018	2017
SOSARs
Fair value	$        38.90	$        43.72	$        43.01
Risk-free interest rate	2.62%	2.90%	2.36%
Dividend yield	0.87%	1.39%	1.27%
Volatility	27.23%	31.49%	31.35%
Expected term (years)	9.00	9.00	9.00

Aggregate Intrinsic Values of Options Exercised

in thousands	2019	2018	2017
Aggregate intrinsic value of SOSARs exercised	$       74,838	$       49,248	$       13,758

Performance Shares [Member]

Summary of Activity for Nonvested Performance Share Units

	Target	Weighted-average
	Number	Grant Date
	of Shares	Fair Value
Performance Shares
Nonvested at January 1, 2019	350,678	$           106.06
Granted	133,105	110.39
Vested	(235,611)	100.65
Canceled/forfeited	(3,268)	111.47
Nonvested at December 31, 2019	244,904	$           113.55

Aggregate Value of Performance Shares

in thousands	2019	2018	2017
Aggregate value of distributed
performance shares	$       33,169	$       53,721	$       52,368

Restricted Shares [Member]

Summary of Restricted Stock Units

		Weighted-average
	Number	Grant Date
	of Shares	Fair Value
Restricted Stock Units
Nonvested at January 1, 2019	145,379	$           103.88
Granted	90,335	110.39
Vested	(20,631)	85.45
Canceled/forfeited	(3,153)	111.33
Nonvested at December 31, 2019	211,930	$           108.34

SOSARs [Member]

Summary of Our SOSAR Activity

			Weighted-average
			Remaining	Aggregate
	Number	Weighted-average	Contractual	Intrinsic Value
	of Shares	Exercise Price	Life (Years)	(in thousands)
SOSARs
Outstanding at January 1, 2019	1,741,583	$             58.64
Granted	72,900	113.16
Exercised	(849,268)	41.77
Forfeited or expired	(20,616)	113.14
Outstanding at December 31, 2019	944,599	$             76.84	4.77	$           63,019
Exercisable at December 31, 2019	786,299	$             69.27	4.07	$           58,405

Cash and Stock Consideration Received and Tax Benefit Realized from SOSAR Exercises and Compensation Cost Recorded

in thousands	2019	2018	2017
SOSARs
Cash and stock consideration received
from exercises	$              0	$              0	$              0
Tax benefit from exercises	29,000	19,083	5,331
Compensation cost	4,042	4,763	3,723