Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2015

Stock-Based Compensation [Abstract]

Schedule Of Stock-Based Compensation Costs

	For the three months ended				For the six months ended
	June 30,				June 30,
	2015		2014		2015		2014
	(in millions)
Stock-based compensation cost  –  expensed	$	6	$	4	$	12	$	9
Stock-based compensation cost – capitalized	$	6	$	4	$	11	$	9

Summary Of Stock Option Activity

		Weighted
		Average
	Number	Exercise
	of Options	Price
	(in thousands)
Outstanding at December 31, 2014	3,622	$	35.41
Granted	223		26.35
Exercised	–		–
Forfeited or expired	(32)		40.30
Outstanding at June 30, 2015	3,813	$	34.84
Exercisable at June 30, 2015	2,281	$	36.19

Summary Of Restricted Stock Activity

		Weighted
		Average
	Number	Grant Date
	of Shares	Fair Value
	(in thousands)
Unvested shares at December 31, 2014	2,376	$	34.00
Granted	99		26.23
Vested	(17)		38.02
Forfeited	(54)		33.55
Unvested shares at June 30, 2015	2,404	$	33.65

Summary Of Performance Unit Activity

		Weighted
		Average
	Number	Grant Date
	of Units (1)	Fair Value
	(in thousands)
Unvested units at December 31, 2014	223	$	40.44
Granted	443		35.22
Vested	–		–
Forfeited	–		–
Unvested units at June 30, 2015	666	$	36.97

⁽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.