Income Taxes - Characterization of Distributions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Common Stock
Income Taxes
Ordinary income (in dollars per share)		$ 0.100
Capital gain (in dollars per share)	$ 0.300
Total (in dollars per share)	$ 0.300	$ 0.100
Ordinary income (as a percent)		100.00%
Capital gain (as a percent)	100.00%
Total (as a percent)	100.00%	100.00%
Series E Cumulative Redeemable Preferred Stock
Income Taxes
Ordinary income (in dollars per share)			$ 0.772
Total (in dollars per share)			$ 0.772
Ordinary income (as a percent)			100.00%
Total (as a percent)			100.00%
Series F Cumulative Redeemable Preferred Stock
Income Taxes
Ordinary income (in dollars per share)			$ 0.990
Total (in dollars per share)			$ 0.990
Ordinary income (as a percent)			100.00%
Total (as a percent)			100.00%
Series G Cumulative Redeemable Preferred Stock
Income Taxes
Ordinary income (in dollars per share)		$ 0.567	$ 0.234
Capital gain (in dollars per share)	$ 0.469
Total (in dollars per share)	$ 0.469	$ 0.567	$ 0.234
Ordinary income (as a percent)		100.00%	100.00%
Capital gain (as a percent)	100.00%
Total (as a percent)	100.00%	100.00%	100.00%
Series H Cumulative Redeemable Preferred Stock
Income Taxes
Ordinary income (in dollars per share)		$ 1.531	$ 0.923
Capital gain (in dollars per share)	$ 1.531
Total (in dollars per share)	$ 1.531	$ 1.531	$ 0.923
Ordinary income (as a percent)		100.00%	100.00%
Capital gain (as a percent)	100.00%
Total (as a percent)	100.00%	100.00%	100.00%
Series I Cumulative Redeemable Preferred Stock
Income Taxes
Ordinary income (in dollars per share)		$ 1.425	$ 0.653
Capital gain (in dollars per share)	$ 1.425
Total (in dollars per share)	$ 1.425	$ 1.425	$ 0.653
Ordinary income (as a percent)		100.00%	100.00%
Capital gain (as a percent)	100.00%
Total (as a percent)	100.00%	100.00%	100.00%