Statement of Consolidated Changes in Equity (Unaudited) (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Common stock, dividends, per share	$ 0.75	$ 0.75
Retained Earnings [Member]
Common stock, dividends, per share	0.75	0.75
Parent [Member]
Common stock, dividends, per share	$ 0.75	$ 0.75