Computation of Basic/Diluted Earnings Per Common Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Schedule of computation of earnings per share

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

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2019		2018		2019		2018
Numerator:
Consolidated net income	$	328	$	402	$	774	$	902
Denominator:
Denominator for basic earnings per common share—weighted-average common shares outstanding	766		761		765		760
Effect of potential dilutive common shares under the treasury stock method—employee stock options and awards	4		9		5		10
Denominator for basic earnings per common share—weighted-average dilutive common shares outstanding	770		770		770		770
Basic earnings per common share	$	0.43	$	0.53	$	1.01	$	1.19
Diluted earnings per common share	$	0.43	$	0.52	$	1.01	$	1.17

Schedule of antidilutive securities excluded from computation of earnings per share

Weighted-average shares excluded from the computation of diluted earnings per share were as follows (amounts in millions):

	For the Three Months Ended June 30,		For the Six Months Ended June 30,
	2019	2018	2019	2018
Restricted stock units and options with performance measures not yet met	4	6	3	6
Anti-dilutive employee stock options	6	2	6	2