EMPLOYEE BENEFIT PLANS (Tables)

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Stock-Based Compensation Expense

The compensation expense that has been charged against income for these plans was as follows for the years ended December 31,2014, 2013, and 2012:

	2014			2013			2012
	(in millions)
Stock-based compensation expense by type:
Restricted stock	$	91		$	84		$	66
Stock options	7			8			16
Total stock-based compensation expense	98			92			82
Tax benefit recognized	(22		)	(22		)	(21		)
Stock-based compensation expense, net of tax	$	76		$	70		$	61

Activity for Restricted Stock Awards

Activity for our restricted stock was as follows for the year ended December 31, 2014:

	Shares		Weighted- Average Grant-Date Fair Value
	(shares in thousands)
Nonvested restricted stock at December 31, 2013	3,642		$	71.84
Granted	1,264		103.57
Vested	(972	)	62.68
Forfeited	(299	)	75.38
Nonvested restricted stock at December 31, 2014	3,635		$	85.52

Weighted-Average Fair Value of Stock Options

The fair value was estimated on the date of grant using the Black-Scholes pricing model with the weighted-average assumptions indicated below:

	2014			2013			2012
Weighted-average fair value at grant date	$	22.45		$	21.80		$	30.15
Expected option life (years)	4.3 years			4.4 years			4.4 years
Expected volatility	27.6		%	38.8		%	46.3		%
Risk-free interest rate at grant date	1.3		%	0.8		%	0.8		%
Dividend yield	1.1		%	1.5		%	1.2		%

Activity for Option Plans

Activity for our option plans was as follows for the year ended December 31, 2014:

	Shares  Under Option		Weighted-Average Exercise Price
	(shares in thousands)
Options outstanding at December 31, 2013	1,272		$	72.81
Granted	244		102.91
Exercised	(715	)	72.27
Forfeited	(33	)	82.78
Options outstanding at December 31, 2014	768		$	82.45
Options exercisable at December 31, 2014	179		$	67.57