Equity - Stock Based Compensation (Details) - USD ($) $ / shares in Units, $ in Millions								1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	May 07, 2024	Apr. 01, 2024	Mar. 06, 2024	Jan. 11, 2024	Mar. 01, 2023	Mar. 18, 2022	Mar. 11, 2022	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2021	Dec. 31, 2020
Restricted stock
Stock-based incentive plan awards
Compensation expense, net of capitalization											$ 9.5	$ 7.9
Restricted stock | Employees
Stock-based incentive plan awards
Awards granted (in units)		129,178
Weighted average fair value of shares granted during the year (in dollars per share)		$ 156.49
Vesting service period (in years)		3 years
Restricted stock | Non-employee Director
Stock-based incentive plan awards
Awards granted (in units)	14,534			396
Weighted average fair value of shares granted during the year (in dollars per share)	$ 147.95			$ 144.68
Vesting service period (in years)	1 year			1 year
2019 Stock Incentive Plan | Time Based Restricted Stock Units
Stock-based incentive plan awards
Awards granted (in units)			53,679		64,852					52,673			37,976	312,263
Weighted average fair value of shares granted during the year (in dollars per share)			$ 152.32		$ 121.25	$ 130.84	$ 130.05						$ 112.92	$ 84.37
Vesting rights each year beginning 2022 (as a percent)														0.3333%
Grant date fair value			$ 8.2		$ 7.9					$ 6.9			$ 4.3	$ 26.3
Vesting service period (in years)			3 years		3 years					3 years			3 years	3 years
LTIP programs
Stock-based incentive plan awards
Percent of distributions of Operating Partnership that participants are entitled to receive during performance period (in %)											10.00%
Compensation expense, net of capitalization											$ 11.4	$ 12.2
2021 LTIP program | LTIP Units
Stock-based incentive plan awards
Performance period (in years)													3 years
LTIP Units Earned								209,784			209,784
Grant date fair value											$ 5.7
Grant date target value											12.2
2022 LTIP program | LTIP Units
Stock-based incentive plan awards
Performance period (in years)										3 years
Grant date target value											13.7
2022 LTIP program | LTIP Units | Maximum
Stock-based incentive plan awards
Grant date fair value										$ 20.6
2023 LTIP program | LTIP Units
Stock-based incentive plan awards
Performance period (in years)									3 years
Grant date target value											$ 23.6
2023 LTIP program | LTIP Units | Maximum
Stock-based incentive plan awards
Grant date fair value									$ 42.5
2024 LTIP program | LTIP Units
Stock-based incentive plan awards
Performance period (in years)											3 years
Grant date fair value											$ 44.1
Grant date target value											$ 24.5