v3.25.1

Summary Of Significant Accounting Policies (Carrying Value Of Indebtedness And Corresponding Estimate Of Fair Value) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net	$ 5,535	$ 4,947
Sales-type lease receivable, net	14,958	14,657
Mortgage notes payable, net	4,277,710	4,276,609
Unsecured senior notes, net	9,797,824	10,645,077
Unsecured line of credit	300,000	0
Unsecured term loan, net	796,158	798,813
Unsecured commercial paper	500,000	500,000
Related Party
Summary Of Significant Accounting Policies [Line Items]
Related party notes receivable, net	88,816	88,779
Carrying Amount [Member]
Summary Of Significant Accounting Policies [Line Items]
Sales-type lease receivable, net	14,958	14,657
Total	109,309	108,383
Mortgage notes payable, net	4,277,710	4,276,609
Unsecured senior notes, net	9,797,824	10,645,077
Unsecured line of credit	300,000	0
Unsecured term loan, net	796,158	798,813
Unsecured commercial paper	500,000	500,000
Total	15,671,692	16,220,499
Carrying Amount [Member] \| Related Party
Summary Of Significant Accounting Policies [Line Items]
Related party notes receivable, net	88,816	88,779
Carrying Amount [Member] \| Nonrelated Party
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net	5,535	4,947
Estimated Fair Value [Member]
Summary Of Significant Accounting Policies [Line Items]
Sales-type lease receivable, net	13,757	13,632
Total	106,821	109,032
Mortgage notes payable, net	3,868,743	3,808,095
Unsecured senior notes, net	9,265,592	10,005,606
Unsecured line of credit	298,007	0
Unsecured term loan, net	801,420	799,580
Unsecured commercial paper	500,000	500,000
Total	14,733,762	15,113,281
Estimated Fair Value [Member] \| Related Party
Summary Of Significant Accounting Policies [Line Items]
Related party notes receivable, net	87,815	89,213
Estimated Fair Value [Member] \| Nonrelated Party
Summary Of Significant Accounting Policies [Line Items]
Note receivable, net	$ 5,249	$ 6,187

Summary Of Significant Accounting Policies [Line Items]

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Fair value portion of asset recognized for present right to economic benefit.

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Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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BXP, Inc. 10-Q