Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

Stock-Based Compensation [Abstract]

Schedule Of Stock-Based Compensation Costs

	For the three months ended				For the nine months ended
	September 30,				September 30,
	2015		2014		2015		2014
	(in millions)
Stock-based compensation cost  –  expensed	$	6	$	4	$	18	$	13
Stock-based compensation cost – capitalized	$	6	$	4	$	17	$	13

Summary Of Stock Option Activity

		Weighted
		Average
	Number	Exercise
	of Options	Price
	(in thousands)	(per share)
Outstanding at December 31, 2014	3,622	$	35.41
Granted	224		26.35
Exercised	–		–
Forfeited or expired	(67)		38.97
Outstanding at September 30, 2015	3,779	$	34.82
Exercisable at September 30, 2015	2,249	$	36.17

Summary Of Restricted Stock Activity

		Weighted
		Average
	Number	Grant Date
	of Shares	Fair Value
	(in thousands)	(per share)
Unvested shares at December 31, 2014	2,376	$	34.00
Granted	103		26.05
Vested	(98)		34.96
Forfeited	(70)		33.54
Unvested shares at September 30, 2015	2,311	$	33.61

Summary Of Performance Unit Activity

		Weighted
		Average
	Number	Grant Date
	of Units (1)	Fair Value
	(in thousands)	(per unit)
Unvested units at December 31, 2014	223	$	40.44
Granted	443		35.22
Vested	–		–
Forfeited	–		–
Unvested units at September 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.