Equity (Dividends per Share) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Common stock
Class of Stock [Line Items]
Common stock, dividends (in USD per share)	$ 5.75	$ 4.80	$ 4.60
Series B Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividends (in USD per share)	1.80	1.80	1.80
Series O Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividends (in USD per share)	4,881	7,722	6,750
Series P Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividends (in USD per share)	6,181	6,125	6,125
Series Q Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividends (in USD per share)			4,031
Series R Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividends (in USD per share)	4,850	4,850	4,850
Series S Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividends (in USD per share)	5,000	5,000	5,000
Series T Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividends (in USD per share)	3,400	869
Series U Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividends (in USD per share)	3,317
Series V Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Dividends (in USD per share)	$ 1,998