Income per Share Income per Share (Tables)

12 Months Ended

Dec. 31, 2021

Weighted average shares outstanding and antidilutive shares [Line Items]

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:

	Year Ended December 31
Millions of shares	2021	2020	2019
Basic weighted average common shares outstanding	892	881	875
Dilutive effect of awards granted under our stock incentive plans	—	—	—
Diluted weighted average common shares outstanding	892	881	875
Antidilutive shares:
Options with exercise price greater than the average market price	22	27	24
Options which are antidilutive due to net loss position	—	1	1
Total antidilutive shares	22	28	25