CONSOLIDATED BALANCE SHEET (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Common shares, par value	$ 1.25	$ 1.25
Common shares, authorized	1,360,000,000	1,360,000,000
Common shares, issued	747,301,000	747,385,000
Common shares, outstanding	747,301,000	747,385,000