Earnings Per Common Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings per Common Share

The following table sets forth the computation of basic and diluted earnings per common share (EPS) (in millions, except share and per share amounts):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Basic EPS:
Net income	$	566	$	864	$	753	$	1,204
Weighted average common shares outstanding (in thousands)	463,533		490,818		467,915		497,360
Basic EPS	$	1.22	$	1.76	$	1.61	$	2.42
Diluted EPS:
Net income for purposes of computing diluted EPS	$	566	$	864	$	753	$	1,204
Share computation for diluted EPS (in thousands):
Basic weighted average common shares outstanding	463,533		490,818		467,915		497,360
Dilutive effect of stock awards	1,085		2,147		1,693		3,021
Diluted weighted average common shares outstanding	464,618		492,965		469,608		500,381
Diluted EPS	$	1.22	$	1.75	$	1.60	$	2.41
Restricted stock unit awards excluded from the calculation of diluted EPS because inclusion would be antidilutive (in thousands)	1,690		837		845		616