Equities Dividends Per Share (Details) - $ / shares	3 Months Ended		6 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
8% Cumulative Redeemable [Member]
8% Cumulative Redeemable [Line Items]
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears	$ 0.50	$ 0.50	$ 1.50	$ 1.50
Class B, Series 1 Preferred Stock [Member]
8% Cumulative Redeemable [Line Items]
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears	0.49	0.49	1.48	1.48
Class B, Series 2 Preferred Stock [Member]
8% Cumulative Redeemable [Line Items]
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears	0.44	0.44	1.33	1.33
Class B, Series 3 Preferred Stock [Member]
8% Cumulative Redeemable [Line Items]
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears	0.42	0.42	1.27	1.27
Class B, Series 4 Preferred Stock [Member]
8% Cumulative Redeemable [Line Items]
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears	$ 0.47	$ 0.47	$ 1.41	$ 1.41