INCENTIVE PLANS (Tables)

12 Months Ended

Dec. 31, 2016

Weighted-Average Fair Value And Weighted-Average Assumptions Used In Estimating Fair Value of Grants

	2016	2015	2014
SOSARs
Fair value	$        29.20	$        25.17	$        21.94
Risk-free interest rate	1.66%	1.85%	2.40%
Dividend yield	1.39%	1.70%	1.64%
Volatility	30.42%	33.00%	33.00%
Expected term	9.00 years	8.00 years	8.00 years

Summary of Our Stock Option/SOSAR Activity

			Weighted-average
			Remaining	Aggregate
	Number	Weighted-average	Contractual	Intrinsic Value
	of Shares	Exercise Price	Life (Years)	(in thousands)
SOSARs/Stock Options 1
Outstanding at January 1, 2016	3,052,749	$             58.32
Granted	97,700	92.02
Exercised	(753,251)	83.29
Forfeited or expired	(4,767)	78.22
Outstanding at December 31, 2016	2,392,431	$             51.80	4.30	$         178,558
Vested and expected to vest	2,379,036	$             51.70	4.28	$         177,794
Exercisable at December 31, 2016	2,005,030	$             47.30	3.62	$         158,651

Aggregate Intrinsic Values of Options Exercised

in thousands	2016	2015	2014
Aggregate intrinsic value of SOSARs/
stock options exercised	$       27,705	$       43,620	$         7,372

Cash and Stock Consideration Received and Tax Benefit Realized from Stock Option/Sosar Exercises and Compensation Cost Recorded

in thousands	2016	2015	2014
SOSARs/Stock Options
Cash and stock consideration received
from exercises	$              0	$     72,884	$     23,199
Tax benefit from exercises	10,767	16,920	2,844
Compensation cost	2,744	2,221	4,650

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, 2016	806,339	$             63.13
Granted	164,498	87.73
Vested	(289,424)	53.65
Canceled/forfeited	(14,317)	68.49
Nonvested at December 31, 2016	667,096	$             73.20

Aggregate Value of Performance Shares

in thousands	2016	2015	2014
Aggregate value of distributed
performance shares	$       60,443	$       26,258	$                0

Restricted Shares [Member]

Summary of Restricted Stock Units

		Weighted-average
	Number	Grant Date
	of Shares	Fair Value
Restricted Stock Units
Nonvested at January 1, 2016	74,000	$             58.23
Granted	63,350	87.77
Vested	0	0.00
Canceled/forfeited	(1,920)	87.77
Nonvested at December 31, 2016	135,430	$             71.63