Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Dividends on common stock and dividend equivalents declared (in dollars per share)	$ 0.4	$ 0.33	$ 1.13	$ 0.92
Series E Preferred Stock [Member]
Dividends on preferred stock (in dollars per share)		$ 328.125		$ 995.3125
Series F Preferred Stock [Member]
Dividends on preferred stock (in dollars per share)	$ 328.125		$ 984.375