Condensed Consolidated Statements of Financial Position (Unaudited) (Parentheticals) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Accumulated depreciation	$ (6,103)	$ (5,850)
Long-term debt, current portion	$ 1,803	$ 1,109
Preferred Stock, par value	$ 1	$ 1
Preferred Stock, shares authorized	10,000,000	10,000,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common Stock, par value	$ 1	$ 1
Common Stock, shares authorized	800,000,000	800,000,000
Common Stock, shares issued	166,708,207	167,848,424
Common Stock, shares outstanding	166,708,207	167,848,424