Capital Markets (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended	9 Months Ended
	Apr. 30, 2020	Mar. 31, 2020	Dec. 31, 2020
Class of Stock [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 1.1325
Stock Repurchase Program, Authorized Amount		$ 150.0
Series C Preferred Shares [Member]
Class of Stock [Line Items]
Preferred Stock, Dividends Per Share, Declared		$ 0.359375
Preferred Stock, Dividend Rate, Percentage		5.75%
Series E Preferred Shares [Member]
Class of Stock [Line Items]
Preferred Stock, Dividends Per Share, Declared		$ 0.5625
Preferred Stock, Dividend Rate, Percentage		9.00%
Series G Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Dividends Per Share, Declared		$ 0.359375
Preferred Stock, Dividend Rate, Percentage		5.75%
Subsequent Event [Member]
Class of Stock [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.3825
Number of common shares repurchased			1,116,643
Treasury Stock, Value, Acquired, Cost Method			$ 22.9