CAPITAL STOCK AND STOCK AWARD PLANS (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure Capital Stock And Stock Award Plans Additional Information [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

A summary of our total compensation expense recognized in our consolidated statements of operations and comprehensive income for stock-based compensation is as follows (in thousands):

	2014		2013		2012
Stock options	$	9,243	$	5	$	3,585
Stock awards	36,510		6,808		53,481
Company expense on ESPP discount	2,108		2,281		2,315
Total stock-based compensation expense	$	47,861	$	9,094	$	59,381

Schedule of Share-based Compensation, Stock Options, Activity

The following schedule summarizes stock option activity in the plan. All outstanding unvested options as of December 31, 2014, relate to the performance-based grants from 2011 through 2014.

	Options		Weighted Average Exercise Price		Aggregate Intrinsic Value (in thousands)		Average Remaining Life (years)
Outstanding at December 31, 2013	3,497,544		$	62.21
Grants	1,215,018		74.55
Exercised	(787	)	68.81
Terminated	(7,155	)	58.25
Outstanding at December 31, 2014	4,704,620		$	65.40	$	44,644	8.6
Vested at December 31, 2014	926,218		$	63.28	$	10,751	7.9
Exercisable at December 31, 2014	926,218		$	63.28	$	10,751	7.9

Schedule of Intrinsic Value of Options Exercised

Information on the intrinsic value of options exercised is as follows (in thousands):

2014	$	4
2013	7,640
2012	15,516

Schedule of Share-based Compensation, Activity

The following table summarizes performance shares and restricted stock units by year of grant:

Year of grant	First vesting date	Last vesting date	Performance shares and stock units granted, net of forfeitures	Weighted average grant date fair value (1)		Unvested performance shares and restricted stock units
2010	December 31, 2011	December 31, 2015	686,919	63.28		288,506
2011	December 31, 2012	December 31, 2016	596,676	53.72		352,037
2012	December 31, 2013	December 31, 2017	333,881	48.65		277,121
2013	December 31, 2014	December 31, 2018	396,735	46.45		297,552
2014	December 31, 2015	December 31, 2019	320,738	60.74		320,938
			2,334,949	$	55.54	1,536,154

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(1) Amount shown is the weighted average grant date fair value of performance shares and restricted stock units granted, net of forfeitures.

The following table summarizes performance-based options by year of grant:

Year of grant	First vesting date	Last vesting date	Options granted, net of forfeitures	Weighted average grant date fair value		Unvested options
2011	December 31, 2012	December 31, 2016	911,430	$	15.72	537,744
2012	December 31, 2013	December 31, 2017	1,155,285	13.15		957,394
2013	December 31, 2014	December 31, 2018	1,424,531	11.83		1,070,145
2014	December 31, 2015	December 31, 2019	1,213,374	14.23		1,213,374
			4,704,620	$	13.53	3,778,657

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value per option was estimated using the Black-Scholes option pricing model with the following assumptions:

	2014 Grants		2013 Grants		2012 Grants
Risk-free interest rate	1.93-1.96%		.18-1.94%		.18-.89%
Dividend per share (quarterly amounts)	$0.35-0.38		$0.35		$0.33-0.35
Expected volatility factor	22.0-25.0%		25.0-27.5%		26.0-27.5%
Expected option term	6.3 years		.01-6.3 years		.01-6 years
Weighted average fair value per option	$	14.23	$	11.73	$	13.61

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes our unvested performance shares and restricted stock unit grants as of December 31, 2014:

	Number of Performance Shares and Restricted Stock Units		Weighted Average Grant Date Fair Value
Unvested at December 31, 2013	2,028,669		$	51.55
Granted	321,995		60.70
Vested	(516,165	)	51.26
Forfeitures	(298,345	)	45.88
Unvested at December 31, 2014	1,536,154		$	54.67

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

The following table summarizes these unvested restricted share and restricted stock unit grants as of December 31, 2014:

	Number of Restricted Shares and Stock Units		Weighted Average Grant Date Fair Value
Unvested at December 31, 2013	851,485		$	45.68
Granted	355,878		61.96
Vested	(187,049	)	43.15
Forfeitures	(66,190	)	47.60
Unvested at December 31, 2014	954,124		$	52.12

Schedule Of Fair Value Stock Awards Vested

A summary of the fair value of full value awards vested (in thousands):

2014	$	36,510
2013	6,808
2012	53,562

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity

The following is a summary of the employee stock purchase plan activity (dollar amounts in thousands):

	Shares purchased by employees	Aggregate cost to employees		Expense recognized by the company
2014	231,564	$	11,943	$	2,108
2013	259,730	12,928		2,281
2012	248,405	13,116		2,315

Share Repurchase Program Disclosure

The activity under this authorization is as follows (dollar amounts in thousands):

	Shares repurchased	Total value of shares repurchased
2013 Program
2013 Purchases	930,075	$	57,689
2014 Purchases	3,763,583	239,037

The activity under those programs for each of the periods reported is as follows (dollar amounts in thousands):

	Shares repurchased	Total value of shares repurchased
2009 Program
2010 Purchases	1,394,831	$	90,500
2011 Purchases	3,540,171	246,935
2012 Purchases	4,237,555	257,064
2013 Purchases	827,443	48,048

	Shares repurchased	Total value of shares repurchased
2012 Program
2013 Purchases	10,000,000	$	579,853