Fair Value Measurements - Real Estate Impairment (Details)	12 Months Ended
	Dec. 31, 2025 $ / shares property
Discontinued Operations | Office
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of Properties	19
Level 2 | Continuing Operations | Office
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of Properties	4
Level 2 | Continuing Operations | Office | Estimated selling price per square foot | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs | $ / shares	44
Level 2 | Continuing Operations | Office | Estimated selling price per square foot | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs | $ / shares	234
Level 2 | Continuing Operations | Industrial
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of Properties	1
Level 2 | Continuing Operations | Industrial | Estimated selling price per square foot
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs | $ / shares	150
Level 2 | Discontinued Operations | Office
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of Properties	15
Level 2 | Discontinued Operations | Office | Estimated selling price per square foot | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs | $ / shares	74
Level 2 | Discontinued Operations | Office | Estimated selling price per square foot | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs | $ / shares	209
Level 3 | Continuing Operations | Office
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of Properties	0
Level 3 | Continuing Operations | Industrial
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of Properties	0
Level 3 | Discontinued Operations | Office
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of Properties	10
Level 3 | Discontinued Operations | Office | Market rent per square foot | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs | $ / shares	15
Level 3 | Discontinued Operations | Office | Market rent per square foot | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs | $ / shares	41
Level 3 | Discontinued Operations | Office | Terminal capitalization rates | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs	0.0825
Level 3 | Discontinued Operations | Office | Terminal capitalization rates | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs	0.1050
Level 3 | Discontinued Operations | Office | Discount rates | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs	0.1000
Level 3 | Discontinued Operations | Office | Discount rates | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Range of Inputs	0.1250
Level 2 and Level 3 | Discontinued Operations | Office
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of Properties	6