INCOME TAXES (Taxability Of Common And Preferred Share Distributions) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Preferred Shares - 6.875% Series C
Income Tax
Ordinary income (in hundredths)	0.00%	0.00%	100.00%
Return of Capital (in hundredths)	0.00%	100.00%	0.00%
Capital Gain Distribution (in hundredths)	100.00%	0.00%	0.00%
Preferred Shares - 6.5% Series D
Income Tax
Ordinary income (in hundredths)	0.00%	0.00%	100.00%
Return of Capital (in hundredths)	0.00%	100.00%	0.00%
Capital Gain Distribution (in hundredths)	100.00%	0.00%	0.00%
Preferred Shares - 6.5% Series E
Income Tax
Ordinary income (in hundredths)	0.00%	0.00%	100.00%
Return of Capital (in hundredths)	0.00%	100.00%	0.00%
Capital Gain Distribution (in hundredths)	100.00%	0.00%	0.00%
Common Shares - Class A
Income Tax
Ordinary income (in hundredths)		0.00%	33.03%
Return of Capital (in hundredths)		100.00%	66.97%
Capital Gain Distribution (in hundredths)		0.00%	0.00%