Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Calculation of Diluted Shares

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

	Three Months Ended March 31,
	2019	2020
Shares used in computation of basic earnings per share	491	498
Total dilutive effect of outstanding stock awards	11	8
Shares used in computation of diluted earnings per share	502	506