Accounting Policies and Supplemental Disclosures (Tables)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Calculation of Diluted Shares

The following table shows the calculation of diluted shares (in millions):

	Three Months Ended June 30,		Six Months Ended June 30,
	2019	2020	2019	2020
Shares used in computation of basic earnings per share	493	500	492	499
Total dilutive effect of outstanding stock awards	10	9	11	9
Shares used in computation of diluted earnings per share	503	509	503	508