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Segment Information (Schedule Of Reconciliation Of Net Operating Income To Net Income) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Net income attributable to the Company's common shareholders / unitholders |  | $ 98,105 | $ 176,021
Preferred Stock Dividends / Distributions |  | (2,625) | (2,625)
Noncontrolling interest-common units of the Operating Partnership |  | (11,599) | (20,432)
Noncontrolling interest in property partnerships |  | (18,830) | (17,234)
Interest expense |  | (101,009) | (90,220)
Net operating income from unconsolidated joint ventures |  | 25,349 | 16,060
Depreciation and amortization expense |  | (164,594) | (165,797)
Transaction costs |  | (460) | (21)
Payroll and related costs from management service contracts |  | (7,863) | (8,073)
General and administrative expense |  | (41,762) | (35,894)
Net operating income attributable to noncontrolling interests in property partnerships |  | 47,085 | 45,909
Gains (losses) from investments in securities |  | (2,969) | 126
Interest and other income |  | (3,753) | (1,648)
Income from unconsolidated joint ventures |  | (213) | (461)
Direct reimbursement of payroll and related costs from management service contracts | [1] | (8,938) | (9,102)
Development and management services revenue |  | (9,277) | (8,405)
Company's Share of Net Operating Income |  | 425,979 | 371,610
Business Intersegment, Eliminations [Member] |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Net income attributable to the Company's common shareholders / unitholders |  | 98,105 | 176,021
Preferred Stock Dividends / Distributions |  | 2,625 | 2,625
Noncontrolling interest-common units of the Operating Partnership |  | 11,599 | 20,432
Noncontrolling interest in property partnerships |  | 18,830 | 17,234
Interest expense |  | 101,009 | 90,220
Impairment loss |  | 24,038 | 0
Net operating income from unconsolidated joint ventures |  | 25,349 | 16,060
Depreciation and amortization expense |  | 164,594 | 165,797
Transaction costs |  | 460 | 21
Payroll and related costs from management service contracts |  | 3,395 | 2,885
General and administrative expense |  | 41,762 | 35,894
Net operating income attributable to noncontrolling interests in property partnerships |  | 47,085 | 45,909
Gains (losses) from investments in securities |  | 2,969 | (126)
Interest and other income |  | 3,753 | 1,648
(Losses) gains on sales of real estate |  | (905) | 96,397
Income from unconsolidated joint ventures |  | 213 | 461
Direct reimbursement of payroll and related costs from management service contracts |  | 3,395 | 2,885
Development and management services revenue |  | 9,277 | 8,405
Company's Share of Net Operating Income |  | 425,979 | 371,610
Boston Properties Limited Partnership |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Net income attributable to the Company's common shareholders / unitholders |  | 113,382 | 200,907
Preferred Stock Dividends / Distributions |  | (2,625) | (2,625)
Noncontrolling interest in property partnerships |  | (18,830) | (17,234)
Interest expense |  | (101,009) | (90,220)
Depreciation and amortization expense |  | (162,682) | (163,853)
Transaction costs |  | (460) | (21)
General and administrative expense |  | (41,762) | (35,894)
Gains (losses) from investments in securities |  | (2,969) | 126
Interest and other income |  | (3,753) | (1,648)
Income from unconsolidated joint ventures |  | (213) | (461)
Development and management services revenue |  | (9,277) | (8,405)
Boston Properties Limited Partnership | Business Intersegment, Eliminations [Member] |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Net income attributable to the Company's common shareholders / unitholders |  | 113,382 | 200,907
Preferred Stock Dividends / Distributions |  | 2,625 | 2,625
Noncontrolling interest in property partnerships |  | 18,830 | 17,234
Interest expense |  | 101,009 | 90,220
Impairment loss |  | 22,272 | 0
Net operating income from unconsolidated joint ventures |  | 25,349 | 16,060
Depreciation and amortization expense |  | 162,682 | 163,853
Transaction costs |  | 460 | 21
Payroll and related costs from management service contracts |  | 3,395 | 2,885
General and administrative expense |  | 41,762 | 35,894
Net operating income attributable to noncontrolling interests in property partnerships |  | 47,085 | 45,909
Gains (losses) from investments in securities |  | 2,969 | (126)
Interest and other income |  | 3,753 | 1,648
(Losses) gains on sales of real estate |  | (905) | 98,907
Income from unconsolidated joint ventures |  | 213 | 461
Direct reimbursement of payroll and related costs from management service contracts |  | 3,395 | 2,885
Development and management services revenue |  | 9,277 | 8,405
Company's Share of Net Operating Income |  | $ 425,979 | $ 371,610
[1] | Rental Revenue is equal to total Revenue per the Company's Consolidated Statements of Operations, less Development and Management Services Revenue and Direct Reimbursements of Payroll and Related Costs from Management Services Contracts Revenue per the Consolidated Statements of Operations.

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