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Shareholders' Equity / Partners' Capital - Distributions (Details) - $ / shares	1 Months Ended	3 Months Ended						9 Months Ended
	Jun. 30, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021
Class A common shares
Class of Stock [Line Items]
Common stock dividend declared (in dollars per share)		$ 0.10	$ 0.10	$ 0.10	$ 0.05	$ 0.05	$ 0.05
Class B common shares
Class of Stock [Line Items]
Common stock dividend declared (in dollars per share)		0.10	0.10	0.10	0.05	0.05	0.05
Series D perpetual preferred shares
Class of Stock [Line Items]
Preferred stock, dividend rate (in percent)	6.50%							6.50%
Preferred shares, dividends declared (in dollars per share)		0	0.30	0.41	0.41	0.41	0.41
Series E perpetual preferred shares
Class of Stock [Line Items]
Preferred stock, dividend rate (in percent)	6.35%							6.35%
Preferred shares, dividends declared (in dollars per share)		0	0.40	0.40	0.40	0.40	0.40
Series F perpetual preferred shares
Class of Stock [Line Items]
Preferred stock, dividend rate (in percent)								5.875%
Preferred shares, dividends declared (in dollars per share)		0.37	0.37	0.37	0.37	0.37	0.37
Series G perpetual preferred shares
Class of Stock [Line Items]
Preferred stock, dividend rate (in percent)								5.875%
Preferred shares, dividends declared (in dollars per share)		0.37	0.37	0.37	0.37	0.37	0.37
Series H perpetual preferred shares
Class of Stock [Line Items]
Preferred stock, dividend rate (in percent)								6.25%
Preferred shares, dividends declared (in dollars per share)		$ 0.39	$ 0.39	$ 0.39	$ 0.39	$ 0.39	$ 0.39

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