Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Calculation of Diluted Shares

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

	Three Months Ended   September 30,		Nine Months Ended   September 30,
	2016	2017	2016	2017
Shares used in computation of basic earnings per share	474	481	473	479
Total dilutive effect of outstanding stock awards	11	13	10	13
Shares used in computation of diluted earnings per share	485	494	483	492