Shareholders' Equity / Partners' Capital - Common Stock Offerings (Details) - Class A common shares - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended			33 Months Ended
	Jan. 31, 2023	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2022	Mar. 31, 2023
Public Stock Offering
Class of Stock [Line Items]
Number of shares sold (in shares)				23,000,000
Par value (in dollars per share)				$ 0.01
Public Stock Offering - Issued Directly By The Company
Class of Stock [Line Items]
Number of shares sold (in shares)				10,000,000
Public Stock Offering - Forward Sales Agreement
Class of Stock [Line Items]
Number of shares sold (in shares)	8,000,000		5,000,000	13,000,000
Proceeds from sale of stock	$ 298.4		$ 185.6
At the Market - Common Share Offering Program
Class of Stock [Line Items]
Shares authorized for future issuance, value		$ 500.0			$ 500.0
Shares issued (in shares)		0		0	1,835,416
Shares available for future issuance, value		$ 425.2			$ 425.2