Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current Assets
Allowance for doubtful accounts receivable, current	$ 78	$ 89
Shareholders’ Equity
Common stock par value (in USD per share)	$ 1	$ 1
Common stock authorized (in shares)	2,000,000,000	2,000,000,000
Common stock issued (in shares)	1,465,706,360	1,465,706,360