Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2014

Stock-Based Compensation [Abstract]

Schedule Of Employee Stock-Based Compensation Costs

	For the three months ended				For the nine months ended
	September 30,				September 30,
	2014		2013		2014		2013
	(in millions)
Stock-based compensation cost – expensed	$	4	$	3	$	13	$	9
Stock-based compensation cost – capitalized	$	4	$	3	$	13	$	9

Summary Of Stock Option Activity

		Weighted
		Average
	Number	Exercise
	of Options	Price
	(in thousands)
Outstanding at December 31, 2013	3,313	$	35.70
Granted	90		46.55
Exercised	(279)		32.07
Forfeited or expired	(102)		38.42
Outstanding at September 30, 2014	3,022		36.27
Exercisable at September 30, 2014	1,844	$	35.39

Summary Of Restricted Stock Activity

		Weighted
		Average
	Number	Grant Date
	of Shares	Fair Value
	(in thousands)
Unvested shares at December 31, 2013	1,771	$	37.55
Granted	25		45.81
Vested	(22)		36.62
Forfeited	(117)		37.94
Unvested shares at September 30, 2014	1,657	$	37.66

Summary Of Performance Unit Activity

		Weighted
		Average
	Number	Grant Date
	of Units	Fair Value
	(in thousands)
Unvested units at December 31, 2013	–	$	–
Granted	359		40.44
Vested	–		–
Forfeited	(25)		40.44
Unvested units at September 30, 2014	334	$	40.44