XML 77 R60.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Segment Information (Schedule Of Segment Reporting By Geographic Area And Property Type) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |
Rental Revenue: Office | $ 631,957 | $ 601,117 | $ 1,246,337 | $ 1,247,607
Rental Revenue: Residential | 4,210 | 4,088 | 8,166 | 8,137
Rental Revenue: Hotel | 13,375 | 12,808 | 20,795 | 21,565
Total revenue | $ 649,542 | $ 618,013 | $ 1,275,298 | $ 1,277,309
Rental Revenue: % of Grand Totals | 100.00% | 100.00% | 100.00% | 100.00%
Rental Expenses: Office | $ 228,819 | $ 216,332 | $ 455,555 | $ 433,904
Rental Expenses: Residential | 1,635 | 1,606 | 3,186 | 3,206
Rental Expenses: Hotel | 8,404 | 7,978 | 15,495 | 15,612
Rental Expenses: Total | $ 238,858 | $ 225,916 | $ 474,236 | $ 452,722
Rental Expenses: % Of Grand Totals | 100.00% | 100.00% | 100.00% | 100.00%
Net operating Income | $ 410,684 | $ 392,097 | $ 801,062 | $ 824,587
Net operating Income: % of Grand Totals | 100.00% | 100.00% | 100.00% | 100.00%
Boston [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental Revenue: Office | $ 191,760 | $ 179,048 | $ 377,196 | $ 356,875
Rental Revenue: Residential | 1,153 | 1,180 | 2,292 | 2,351
Rental Revenue: Hotel | 13,375 | 12,808 | 20,795 | 21,565
Total revenue | $ 206,288 | $ 193,036 | $ 400,283 | $ 380,791
Rental Revenue: % of Grand Totals | 31.76% | 31.24% | 31.39% | 29.81%
Rental Expenses: Office | $ 74,160 | $ 68,754 | $ 149,416 | $ 139,441
Rental Expenses: Residential | 545 | 513 | 1,040 | 1,033
Rental Expenses: Hotel | 8,404 | 7,978 | 15,495 | 15,612
Rental Expenses: Total | $ 83,109 | $ 77,245 | $ 165,951 | $ 156,086
Rental Expenses: % Of Grand Totals | 34.79% | 34.19% | 34.99% | 34.47%
Net operating Income | $ 123,179 | $ 115,791 | $ 234,332 | $ 224,705
Net operating Income: % of Grand Totals | 29.99% | 29.53% | 29.25% | 27.25%
New York [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental Revenue: Office | $ 251,844 | $ 243,957 | $ 493,414 | $ 535,815
Rental Revenue: Residential | 0 | 0 | 0 | 0
Rental Revenue: Hotel | 0 | 0 | 0 | 0
Total revenue | $ 251,844 | $ 243,957 | $ 493,414 | $ 535,815
Rental Revenue: % of Grand Totals | 38.77% | 39.47% | 38.69% | 41.95%
Rental Expenses: Office | $ 93,110 | $ 88,749 | $ 184,794 | $ 177,547
Rental Expenses: Residential | 0 | 0 | 0 | 0
Rental Expenses: Hotel | 0 | 0 | 0 | 0
Rental Expenses: Total | $ 93,110 | $ 88,749 | $ 184,794 | $ 177,547
Rental Expenses: % Of Grand Totals | 38.98% | 39.29% | 38.97% | 39.22%
Net operating Income | $ 158,734 | $ 155,208 | $ 308,620 | $ 358,268
Net operating Income: % of Grand Totals | 38.65% | 39.59% | 38.53% | 43.45%
San Francisco [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental Revenue: Office | $ 85,483 | $ 78,524 | $ 170,124 | $ 154,841
Rental Revenue: Residential | 0 | 0 | 0 | 0
Rental Revenue: Hotel | 0 | 0 | 0 | 0
Total revenue | $ 85,483 | $ 78,524 | $ 170,124 | $ 154,841
Rental Revenue: % of Grand Totals | 13.16% | 12.71% | 13.34% | 12.12%
Rental Expenses: Office | $ 25,938 | $ 25,470 | $ 50,412 | $ 49,375
Rental Expenses: Residential | 0 | 0 | 0 | 0
Rental Expenses: Hotel | 0 | 0 | 0 | 0
Rental Expenses: Total | $ 25,938 | $ 25,470 | $ 50,412 | $ 49,375
Rental Expenses: % Of Grand Totals | 10.86% | 11.27% | 10.63% | 10.91%
Net operating Income | $ 59,545 | $ 53,054 | $ 119,712 | $ 105,466
Net operating Income: % of Grand Totals | 14.50% | 13.53% | 14.94% | 12.79%
Washington, DC [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Rental Revenue: Office | $ 102,870 | $ 99,588 | $ 205,603 | $ 200,076
Rental Revenue: Residential | 3,057 | 2,908 | 5,874 | 5,786
Rental Revenue: Hotel | 0 | 0 | 0 | 0
Total revenue | $ 105,927 | $ 102,496 | $ 211,477 | $ 205,862
Rental Revenue: % of Grand Totals | 16.31% | 16.58% | 16.58% | 16.12%
Rental Expenses: Office | $ 35,611 | $ 33,359 | $ 70,933 | $ 67,541
Rental Expenses: Residential | 1,090 | 1,093 | 2,146 | 2,173
Rental Expenses: Hotel | 0 | 0 | 0 | 0
Rental Expenses: Total | $ 36,701 | $ 34,452 | $ 73,079 | $ 69,714
Rental Expenses: % Of Grand Totals | 15.37% | 15.25% | 15.41% | 15.40%
Net operating Income | $ 69,226 | $ 68,044 | $ 138,398 | $ 136,148
Net operating Income: % of Grand Totals | 16.86% | 17.35% | 17.28% | 16.51%

X
- Definition Operating Income Loss From Reportable Segments + References No definition available. + Details
Name: | bxp_OperatingIncomeLossFromReportableSegments
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage Of Total Net Operating Income + References No definition available. + Details
Name: | bxp_PercentageOfTotalNetOperatingIncome
Namespace Prefix: | bxp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage Of Total Rental Expenses. + References No definition available. + Details
Name: | bxp_PercentageOfTotalRentalExpenses
Namespace Prefix: | bxp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition These are percentages not monetary value + References No definition available. + Details
Name: | bxp_PercentageOfTotalRevenue
Namespace Prefix: | bxp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rental Expenses Office + References No definition available. + Details
Name: | bxp_RentalExpensesOffice
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Rental Expenses Operating Expenses Total. + References No definition available. + Details
Name: | bxp_RentalExpensesOperatingExpensesTotal
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Rental Expenses Residential. + References No definition available. + Details
Name: | bxp_RentalExpensesResidential
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Rental Revenue Office + References No definition available. + Details
Name: | bxp_RentalRevenueOffice
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Rental Revenue Residential. + References No definition available. + Details
Name: | bxp_RentalRevenueResidential
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Rental Revenue Total + References No definition available. + Details
Name: | bxp_RentalRevenueTotal
Namespace Prefix: | bxp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate direct costs incurred in operating leased, owned and other hotels. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_DirectCostsOfHotels
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, net of promotional allowances, of revenue from managing and operating hotels, including, but not limited to, revenue from occupancy, casino, food and beverage, and retail. Excludes operating lease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_RevenueFromLeasedAndOwnedHotels
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementGeographicalAxis=bxp_BostonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=stpr_NY
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=bxp_SanFranciscoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=stpr_WA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |