Equity and Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Weighted Average Number of Common and Common Equivalent Shares Used in Calculation of Basic and Diluted Earnings Per Share

The weighted average number of common and common equivalent shares used in the calculation of basic and diluted earnings per share consisted of the following:

	Three Months Ended   September 30,		Nine Months Ended   September 30,
	2017	2016	2017	2016
	(In millions)
Weighted-average common shares outstanding (used in the calculation of basic earnings per share)	791	795	792	795
Potential dilution from stock options and restricted stock and stock units	1	—	1	—
Weighted-average common and common equivalent shares (used in the calculation of diluted earnings per share)	792	795	793	795
Antidilutive stock options excluded from the calculation of diluted earnings per share	6	7	7	7