Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Share-based Compensation [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

The following table summarizes the components of stock-based compensation (in millions):

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2012		2011		2012		2011
Stock-based compensation expense	$	21	$	13	$	61	$	42
Tax benefit	8		5		23		16
Stock-based compensation cost capitalized in property, plant and equipment	1		1		3		3

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Number of Options		Weighted Average Exercise Price		Aggregate Intrinsic Value (in millions)
Options outstanding at January 1, 2012	2,764,670		$	41.25
Granted	—		$	—
Exercised	(1,357,451	)	$	40.76
Forfeited or expired	(16,114	)	$	41.93
Options outstanding at September 30, 2012	1,391,105		$	41.73	$	25
Options exercisable at September 30, 2012	1,189,761		$	41.35	$	22

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

The following table summarizes the Company’s restricted stock awards activity for the nine months ended September 30, 2012:

	Restricted Stock		Weighted Average Grant Date Fair Value
Balance at January 1, 2012	726,224		$	42.25
Grants	162,220		$	53.51
Forfeitures	(14,700	)	$	47.16
Vested and issued	(243,425	)	$	33.71
Balance at September 30, 2012	630,319		$	48.16

Summary of Performance Share Activity [Table Text Block]

The following table summarizes the Company’s performance share activity for the nine months ended September 30, 2012:

	Performance Shares
Balance at January 1, 2012	1,608,733
Grants	573,810
Forfeitures	(42,997	)
Payouts	(504,755	)
Balance at September 30, 2012	1,634,791