Consolidated Statement of Changes in Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Common Stock, Dividends Per Share	$ 1.12	$ 0.86	$ 0.78
$25 Par Preferred Stock [Member]
Preferred Stock, Par Value	$ 25	$ 25	$ 25
Preferred Stock, Dividends Per Share	$ 1	$ 1	$ 1