Income (Loss) per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Weighted average shares outstanding and antidilutive shares

A reconciliation of the number of shares used for the basic and diluted income per share computations is as follows:

	Three Months Ended June 30		Six Months Ended June 30
Millions of shares	2020	2019	2020	2019
Basic weighted average common shares outstanding	877	874	877	874
Dilutive effect of awards granted under our stock incentive plans	—	1	—	—
Diluted weighted average common shares outstanding	877	875	877	874
Antidilutive shares:
Options with exercise price greater than the average market price	27	23	27	20
Shares which are antidilutive due to net loss position	1	—	2	—
Total antidilutive shares	28	23	29	20