Earnings Per Share

12 Months Ended

Dec. 31, 2020

The following table sets forth the calculation of basic and diluted earnings per share:


	Basic						Diluted
	2020		2019		2018		2020		2019		2018
	($ in millions except per share amounts, shares in millions)

Net income	$	2,013	$	2,722	$	2,666	$	2,013	$	2,722	$	2,666
Dividend equivalent payments	(3)		(5)		(6)		(2)		—		(1)

Income available to common stockholders	$	2,010	$	2,717	$	2,660	$	2,011	$	2,722	$	2,665

Weighted-average shares outstanding	255.1		263.3		277.7		255.1		263.3		277.7
Dilutive effect of outstanding options
and share-settled awards							1.5		2.3		2.5
Adjusted weighted-average shares outstanding							256.6		265.6		280.2

Earnings per share	$	7.88	$	10.32	$	9.58	$	7.84	$	10.25	$	9.51

In each year, dividend equivalent payments were made to holders of stock options and RSUs. For purposes of computing basic earnings per share, dividend equivalent payments made to holders of stock options and RSUs were deducted from net income to determine income available to common stockholders. For purposes of computing diluted earnings per share, we evaluate on a grant-by-grant basis those stock options and RSUs receiving dividend equivalent payments under the two-class and treasury stock methods to determine which method is more dilutive for each grant. For those grants for which the two-class method was more dilutive, net income was reduced by dividend equivalent payments to determine income available to common stockholders. There are no options excluded from the dilution calculations due to exercise prices exceeding the average market price of Common Stock for each of the years ended December 31, 2020, 2019, and 2018.