Financial Instruments and Fair Value Measurements - Schedule of Items Measured at Fair Value on Nonrecurring Basis (Parenthetical) (Details) - Fair Value, Nonrecurring [Member] - 146 Geary Street, San Francisco, CA - Discounted Cash Flow Analysis	9 Months Ended
	Sep. 30, 2023
Minimum
Real Estate [Line Items]
Discount rate	5.00%
Capitalization rate	4.25%
Maximum
Real Estate [Line Items]
Discount rate	7.75%
Capitalization rate	5.75%