XML 44 R27.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Unsecured Senior Notes (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2016
Debt Disclosure [Abstract] |
Schedule of Senior Notes | The following summarizes the unsecured senior notes outstanding as of June 30, 2016 (dollars in thousands):
| Coupon/ Stated Rate |  | Effective Rate(1) |  | Principal Amount |  | Maturity Date(2) |
10 Year Unsecured Senior Notes | 5.875 | % |  | 5.967 | % |  | $ | 700,000 |  |  | October 15, 2019 |
10 Year Unsecured Senior Notes | 5.625 | % |  | 5.708 | % |  | 700,000 |  |  | November 15, 2020 |
10 Year Unsecured Senior Notes | 4.125 | % |  | 4.289 | % |  | 850,000 |  |  | May 15, 2021 |
7 Year Unsecured Senior Notes | 3.700 | % |  | 3.853 | % |  | 850,000 |  |  | November 15, 2018 |
11 Year Unsecured Senior Notes | 3.850 | % |  | 3.954 | % |  | 1,000,000 |  |  | February 1, 2023 |
10.5 Year Unsecured Senior Notes | 3.125 | % |  | 3.279 | % |  | 500,000 |  |  | September 1, 2023 |
10.5 Year Unsecured Senior Notes | 3.800 | % |  | 3.916 | % |  | 700,000 |  |  | February 1, 2024 |
10 Year Unsecured Senior Notes | 3.650 | % |  | 3.766 | % |  | 1,000,000 |  |  | February 1, 2026 |
Total principal |  |  |  |  | 6,300,000 |  |  |  |
Net unamortized discount |  |  |  |  | (12,671 | ) |  |  |
Deferred financing costs, net |  |  |  |  | (30,055 | ) |  |  |
Total |  |  |  |  | $ | 6,257,274 |  |  |  |
_______________
(1) | Yield on issuance date including the effects of discounts on the notes and the amortization of financing costs.
(2) | No principal amounts are due prior to maturity.

X
- Definition Schedule of Senior Notes [Table Text Block] + References No definition available. + Details
Name: | bxp_ScheduleOfSeniorNotesTableTextBlock
Namespace Prefix: | bxp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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