Earnings (Loss) Per Common Share Level 3 (Tables)

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

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

Computation of Basic and Diluted Earnings per Common Share
	Three Months Ended March 31,
(In millions, except for per share data)	2017		2016
Earnings
Net income	$	378	$	323
Shares
Weighted average common shares outstanding, basic	371.4		398.5
Dilutive effect of stock compensation plans	4.2		4.2
Dilutive effect of warrants	3.0		3.6
Weighted average common shares outstanding and dilutive potential common shares	378.6		406.3
Net income per common share
Basic	$	1.02	$	0.81
Diluted	$	1.00	$	0.79