Stock-Based Compensation (Tables)

6 Months Ended

Jun. 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				Six Months Ended
	June 30				June 30
	2012		2011		2012		2011
Stock-based compensation expense	$	23	$	11	$	40	$	29
Tax benefit	9		4		15		11
Stock-based compensation cost capitalized in property, plant and equipment	1		1		2		2

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

	Number of Options		Weighted Average Exercise Price		Aggregate Intrinsic Value
Options outstanding at January 1, 2012	2,764,670		$	41.25
Granted	—		$	—
Exercised	(1,119,489	)	$	40.36
Forfeited or expired	(16,114	)	$	41.93
Options outstanding at June 30, 2012	1,629,067		$	41.86	$	24
Options exercisable at June 30, 2012	1,427,723		$	41.56	$	21

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 six months ended June 30, 2012:

	Restricted Stock		Weighted Average Grant Date Fair Value
Balance at January 1, 2012	726,224		$	42.25
Grants	156,470		$	53.26
Forfeitures	(4,904	)	$	43.78
Vested and issued	(241,508	)	$	33.64
Balance at June 30, 2012	636,282		$	48.05

Summary of Performance Share Activity [Table Text Block]

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

	Performance Shares
Balance at January 1, 2012	1,608,733
Grants	557,891
Forfeitures	(32,203	)
Payouts	(504,755	)
Balance at June 30, 2012	1,629,666