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Schedule of Unsecured Senior Notes (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Sep. 29, 2021
Mar. 16, 2021
Dec. 31, 2020
Debt Instrument [Line Items]        
Debt Issuance Costs, Net $ (32,086)      
Senior Notes 9,483,695     $ 9,639,287
Boston Properties Limited Partnership        
Debt Instrument [Line Items]        
Debt Issuance Costs, Net (32,100)      
Senior Notes 9,483,695     $ 9,639,287
Boston Properties Limited Partnership | Senior Notes        
Debt Instrument [Line Items]        
Debt 9,550,000      
Debt Instrument, Unamortized Discount 16,548      
Debt Issuance Costs, Net 49,757      
Senior Notes $ 9,483,695      
Boston Properties Limited Partnership | Senior Notes | 3.279% unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.125%      
Debt $ 500,000      
Debt Instrument, Interest Rate, Effective Percentage [1] 3.279%      
Long-term Debt, Maturity Date [2] Sep. 01, 2023      
Boston Properties Limited Partnership | Senior Notes | 3.916% unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.80%      
Debt $ 700,000      
Debt Instrument, Interest Rate, Effective Percentage [1] 3.916%      
Long-term Debt, Maturity Date [2] Feb. 01, 2024      
Boston Properties Limited Partnership | Senior Notes | 3.350% unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.20%      
Debt $ 850,000      
Debt Instrument, Interest Rate, Effective Percentage [1] 3.35%      
Long-term Debt, Maturity Date [2] Jan. 15, 2025      
Boston Properties Limited Partnership | Senior Notes | 3.766% unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.65%      
Debt $ 1,000,000      
Debt Instrument, Interest Rate, Effective Percentage [1] 3.766%      
Long-term Debt, Maturity Date [2] Feb. 01, 2026      
Boston Properties Limited Partnership | Senior Notes | 3.495% unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.75%      
Debt $ 1,000,000      
Debt Instrument, Interest Rate, Effective Percentage [1] 3.495%      
Long-term Debt, Maturity Date [2] Oct. 01, 2026      
Boston Properties Limited Partnership | Senior Notes | 4.628% unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 4.50%      
Debt $ 1,000,000      
Debt Instrument, Interest Rate, Effective Percentage [1] 4.628%      
Long-term Debt, Maturity Date [2] Dec. 01, 2028      
Boston Properties Limited Partnership | Senior Notes | 3.505% unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.40%      
Debt $ 850,000      
Debt Instrument, Interest Rate, Effective Percentage [1] 3.505%      
Long-term Debt, Maturity Date [2] Jun. 21, 2029      
Boston Properties Limited Partnership | Senior Notes | 2.984% unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.90%      
Debt $ 700,000      
Debt Instrument, Interest Rate, Effective Percentage [1] 2.984%      
Long-term Debt, Maturity Date [2] Mar. 15, 2030      
Boston Properties Limited Partnership | Senior Notes | 3.343 % unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 3.25%      
Debt $ 1,250,000      
Debt Instrument, Interest Rate, Effective Percentage [1] 3.343%      
Long-term Debt, Maturity Date [2] Jan. 30, 2031      
Boston Properties Limited Partnership | Senior Notes | 2.671% unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.55%   2.55%  
Debt $ 850,000   $ 850,000  
Debt Instrument, Interest Rate, Effective Percentage 2.671% [1]   2.671%  
Long-term Debt, Maturity Date [2] Apr. 01, 2032      
Boston Properties Limited Partnership | Senior Notes | 2.524% unsecured senior notes        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage 2.45% 2.45%    
Debt $ 850,000 $ 850,000    
Debt Instrument, Interest Rate, Effective Percentage 2.524% [1] 2.524%    
Long-term Debt, Maturity Date [2] Oct. 01, 2033      
[1] Yield on issuance date including the effects of discounts on the notes, settlements of interest rate contracts and the amortization of financing costs.
[2] No principal amounts are due prior to maturity.