Statement of Changes in Consolidated Equity (Parenthetical) - $ / shares	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Preferred, dividends per share				$ 3.75
Common stock, dividends per share	$ 0.03	$ 0.12	$ 0.12	$ 0.12
Preferred Class A [Member]
Preferred, dividends per share		3.75	3.75
Preferred Class B [Member]
Preferred, dividends per share		$ 26.8750	$ 7.53993