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Debt Obligations, net (Narrative) (Details)	1 Months Ended						3 Months Ended	12 Months Ended
	Jan. 31, 2023 USD ($)	May 31, 2022 USD ($)	Jan. 31, 2022 USD ($)	Nov. 30, 2021 USD ($)	May 31, 2021 USD ($)	Mar. 31, 2021 USD ($) item	Mar. 31, 2023 USD ($)	Dec. 31, 2022	Dec. 31, 2021 USD ($)
Secured Debt | Mortgages
Line of Credit Facility [Line Items]
Weighted average interest rate							3.99%	3.99%
Unsecured Debt | 2.80% Senior Notes
Line of Credit Facility [Line Items]
Aggregate principal amount					$ 400,000,000.0
Stated interest rate					2.80%		2.80%	2.80%
Percent of par value at which the notes were issued					99.127%
Percentage of principal amount of debt at which debt can be redeemed					100.00%
Unsecured Debt | 2.85% Senior Notes
Line of Credit Facility [Line Items]
Aggregate principal amount				$ 350,000,000.0
Stated interest rate				2.85%			2.85%	2.85%
Percent of par value at which the notes were issued				99.123%
Percentage of principal amount of debt at which debt can be redeemed				100.00%
Unsecured Debt | 3.98% Senior Notes
Line of Credit Facility [Line Items]
Aggregate principal amount			$ 475,000,000.0
Stated interest rate			3.98%				3.98%	3.98%
Minimum percentage of aggregate principal amount that can be repaid at any time at the Company's discretion			5.00%
Percentage of principal amount of debt at which debt can be redeemed			100.00%
Unsecured Debt | 5.15% Senior Notes
Line of Credit Facility [Line Items]
Aggregate principal amount		$ 150,000,000.0
Stated interest rate		5.15%					5.15%	5.15%
Stairstep interest rate, Years 1 through 10		2.50%
Stairstep interest rate, Years 11 through 20		3.75%
Stairstep interest rate, Years 21 through 30		5.15%
Minimum percentage of aggregate principal amount that can be repaid at any time at the Company's discretion		5.00%
Percentage of principal amount of debt at which debt can be redeemed		100.00%
Unsecured Debt | 2021 Unsecured Revolver maturing in 2026
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 1,000,000,000.0			$ 1,350,000,000
Number of extension options available | item						2
Debt extension term						12 months
Line of credit facility fee, percent						0.125%
Remaining borrowing capacity							$ 380,000,000.0
Unsecured Debt | Unsecured Revolver maturing in 2025
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 500,000,000
Remaining borrowing capacity	$ 500,000,000.0
Unsecured Debt | LIBOR | Trust Preferred Securities
Line of Credit Facility [Line Items]
Basis point spread on variable interest rate (percent)							1.50%
Unsecured Debt | LIBOR | 2021 Unsecured Revolver maturing in 2026
Line of Credit Facility [Line Items]
Basis point spread on variable interest rate (percent)						1.00%
Unsecured Debt | Adjusted SOFR
Line of Credit Facility [Line Items]
Basis point spread on variable interest rate (percent)	1.00%
Unsecured Debt | Adjusted SOFR | 2021 Unsecured Revolver maturing in 2026
Line of Credit Facility [Line Items]
Basis point spread on variable interest rate (percent)							1.00%	1.00%
Minimum | Unsecured Debt | Unsecured Senior Notes
Line of Credit Facility [Line Items]
Unencumbered assets to unsecured debt ration							1.25
Minimum | Unsecured Debt | 2021 and 2023 Unsecured Revolvers
Line of Credit Facility [Line Items]
Unencumbered assets to unsecured debt ration							1.33
Debt instrument covenant multiple of minimum fixed charges on outstanding borrowings							1.15

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