Notes Payable - Unsecured Senior Notes (Details) - Senior Notes, Unsecured $ in Millions	Dec. 31, 2022 USD ($) tranche
Debt Instrument [Line Items]
Debt amount	$ 1,000
Number of tranches | tranche	5
4.09% Senior Notes, Unsecured
Debt Instrument [Line Items]
Debt amount	$ 100
Interest rate on mortgage loan (percent)	4.09%
3.91% Senior Notes, Unsecured
Debt Instrument [Line Items]
Debt amount	$ 250
Interest rate on mortgage loan (percent)	3.91%
3.78% Senior Notes, Unsecured
Debt Instrument [Line Items]
Debt amount	$ 125
Interest rate on mortgage loan (percent)	3.78%
3.86% Senior Notes, Unsecured
Debt Instrument [Line Items]
Debt amount	$ 250
Interest rate on mortgage loan (percent)	3.86%
3.95% Senior Notes, Unsecured
Debt Instrument [Line Items]
Debt amount	$ 275
Interest rate on mortgage loan (percent)	3.95%