Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Schedule Of Valuation Assumptions

Assumptions	2014	2013	2012
Risk-free interest rate	1.6%	1.5%	0.6%
Expected dividend yield	–	–	–
Expected volatility	32.5%	38.6%	58.2%
Expected term	5 years	5 years	5 years

Summary Of Stock Option Activity

	2014			2013			2012
			Weighted			Weighted			Weighted
			Average			Average			Average
	Number		Exercise	Number		Exercise	Number		Exercise
	of Shares		Price	of Shares		Price	of Shares		Price
	(in thousands)			(in thousands)			(in thousands)
Options outstanding at January 1	3,313	$	35.70	3,650	$	29.84	4,743	$	21.24
Granted	835		32.31	571		38.95	613		34.34
Exercised	(402)		30.60	(833)		12.12	(1,608)		5.71
Forfeited or expired	(124)		37.80	(75)		37.31	(98)		37.76
Options outstanding at December 31	3,622	$	35.41	3,313	$	35.70	3,650	$	29.84

Summary Of Stock Options Outstanding

	Options Outstanding					Options Exercisable
				Weighted					Weighted
				Average					Average
	Options		Weighted	Remaining		Options		Weighted	Remaining
	Outstanding at		Average	Contractual		Exercisable at		Average	Contractual
Range of	December 31,		Exercise	Life		December 31,		Exercise	Life
Exercise Prices	2014		Price	(Years)		2014		Price	(Years)
	(in thousands)					(in thousands)
$27.09-$29.69	21		28.42	2.9		17		28.53	2.5
$30.23-$35.91	1,744		32.04	4.9		819		32.83	3.1
$36.22-$39.91	1,443		37.52	4.3		1,117		37.10	3.9
$40.15-$51.47	414		42.64	2.9		324		41.56	1.9
	3,622	$	35.41	4.4	$	2,277	$	36.13	3.3

Summary Of Restricted Stock Activity

	2014			2013			2012
			Weighted			Weighted				Weighted
			Average			Average				Average
	Number		Grant Date	Number		Grant Date		Number		Grant Date
	of Shares		Fair Value	of Shares		Fair Value		of Shares		Fair Value
	(in thousands)			(in thousands)				(in thousands)
Unvested shares at January 1	1,771	$	37.55	1,118	$	35.64		1,020	$	36.71
Granted	1,295		30.89	1,109		38.92		537		34.39
Vested	(548)		37.12	(382)		36.29		(344)		36.50
Forfeited	(142)		37.91	(74)		35.81		(95)		36.97
Unvested shares at December 31	2,376	$	34.00	1,771	$	37.55		1,118	$	35.64

Stock Options [Member]

Schedule Of Stock-Based Compensation Costs

	2014		2013		2012
		(in millions)
Stock-based compensation cost related to stock options – general and administrative expense	$	5	$	5	$	5
Stock-based compensation cost related to stock options – capitalized	$	4	$	5	$	4

Restricted Stock [Member]

Schedule Of Stock-Based Compensation Costs

		2014		2013		2012
		(in millions)
Stock-based compensation cost related to restricted stock grants – general and administrative expense	$	10	$	7	$	6
Stock-based compensation cost related to restricted stock grants – capitalized	$	12	$	7	$	6

Equity-Classified Performance Units [Member]

Schedule Of Stock-Based Compensation Costs

		2014
		(millions)
Stock-based compensation cost related to performance units - general and administrative expense	$	3
Stock-based compensation cost related to performance units - capitalized	$	2

Summary Of Equity-Classified Performance Units Activity

	2014
			Weighted
			Average
	Number		Grant Date
	of Units (1)		Fair Value
Unvested shares at January 1	-	$	-
Granted	359		40.44
Vested	(111)		40.44
Forfeited	(25)		40.44
Unvested shares at December 31	223	$	40.44
(1) These amounts reflect the number of performance units granted in thousands. The actual payout of shares may range from a minimum of zero shares to a maximum of two shares contingent upon the actual performance against the Performance Measures.