Income per Common Share (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended September 30,
	2013				2012
(In millions, except per share data)	Basic		Diluted		Basic		Diluted
Net income	$	569	$	569	$	450	$	450
Weighted average common shares outstanding	707		707		706		706
Effect of dilutive securities	—		4		—		3
Weighted average common shares, including
dilutive effect	707		711		706		709
Per share:
Net income		$0.80		$0.80		$0.64		$0.63

	Nine Months Ended September 30,
	2013				2012
(In millions, except per share data)	Basic		Diluted		Basic		Diluted
Net income	$	1,378	$	1,378	$	1,260	$	1,260
Weighted average common shares outstanding	708		708		705		705
Effect of dilutive securities	—		4		—		4
Weighted average common shares, including
dilutive effect	708		712		705		709
Per share:
Net income	$1.95		$1.94		$1.79		$1.78