Condensed Consolidated Statements Of Financial Position (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Property, plant and equipment, accumulated depreciation	$ 19,591	$ 19,342
Other assets, accumulated amortization	$ 611	$ 580
Common stock, par value	$ 5.00	$ 5.00
Common stock, authorized	1,200,000,000	1,200,000,000
Common stock, shares issued	1,012,261,159.000000	1,012,261,159.000000
Treasury stock, shares	447,947,807	449,352,405