XML 31 R16.htm IDEA: XBRL DOCUMENT
v3.21.1

Unsecured Credit Facility | 3 Months Ended
--- | ---
Mar. 31, 2021
Line of Credit Facility [Abstract] |
Unsecured line of Credit | 8. Unsecured Credit Facility On April 24, 2017, Boston Properties Limited Partnership amended and restated its unsecured revolving credit agreement (as amended and restated, the “2017 Credit Facility”). Among other things, the 2017 Credit Facility (1) increased the total commitment of the revolving line of credit (the “Revolving Facility”) from $1.0 billion to $1.5 billion, (2) extended the maturity date from July 26, 2018 to April 24, 2022, (3) reduced the per annum variable interest rates, and (4) added a $500.0 million delayed draw term loan facility (the “Delayed Draw Facility”) that permitted Boston Properties Limited Partnership to draw upon it provided that amounts drawn and subsequently repaid may not be borrowed again. In addition, Boston Properties Limited Partnership may increase the total commitment under the 2017 Credit Facility by up to $500.0 million through increases in the Revolving Facility or the Delayed Draw Facility, or both, subject to syndication of the increase and other conditions. On April 24, 2018, Boston Properties Limited Partnership exercised its option to draw $500.0 million on its Delayed Draw Facility. Prior to its repayment on March 16, 2021, the Delayed Draw Facility bore interest at a variable rate equal to LIBOR plus 0.95% per annum based on Boston Properties Limited Partnership’s credit rating. On March 16, 2021, Boston Properties Limited Partnership repaid all amounts borrowed under the Delayed Draw Facility. The Company recognized a loss from early extinguishment of debt totaling approximately $0.5 million, related to unamortized financing costs. At March 31, 2021, Boston Properties Limited Partnership had no amounts outstanding under its 2017 Credit Facility. The 2017 Credit Facility contains customary representations and warranties, affirmative and negative covenants and events of default provisions, including failure to pay indebtedness, breaches of covenants, and bankruptcy and other insolvency events, which could result in the acceleration of all amounts and cancellation of all commitments outstanding under the Credit Agreement. Among other covenants, the 2017 Credit Facility requires that Boston Properties Limited Partnership maintain on an ongoing basis: (1) a leverage ratio not to exceed 60%, however, the leverage ratio may increase to no greater than 65% provided that it is reduced back to 60% within one year, (2) a secured debt leverage ratio not to exceed 55%, (3) a fixed charge coverage ratio of at least 1.40, (4) an unsecured debt leverage ratio not to exceed 60%, however, the unsecured debt leverage ratio may increase to no greater than 65% provided that it is reduced to 60% within one year, (5) an unsecured debt interest coverage ratio of at least 1.75 and (6) limitations on permitted investments. At March 31, 2021, Boston Properties Limited Partnership was in compliance with each of these financial and other covenant requirements.

X
- Definition Unsecured line of Credit + References No definition available. + Details
Name: | bxp_UnsecuredLineOfCreditTextBlock
Namespace Prefix: | bxp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration