Condensed Consolidated Statements of Financial Position (Unaudited) (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Accumulated depreciation	$ (4,401)	$ (4,337)
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	215,007,156	217,599,230
Common Stock, shares outstanding	215,007,156	217,599,230