Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenue
Base rent	$ 360,595	$ 310,459	$ 1,048,604	$ 918,665
Recoveries from tenants	53,899	45,646	148,669	135,530
Parking and other	21,694	15,850	61,863	47,570
Total rental revenue	436,188	371,955	1,259,136	1,101,765
Hotel revenue	8,045	8,016	22,897	22,290
Development and management services	8,180	6,439	24,706	34,267
Total revenue	452,413	386,410	1,306,739	1,158,322
Expenses
Rental	154,985	128,041	439,831	376,310
Hotel	6,032	6,194	18,052	17,551
General and administrative	17,340	18,067	62,052	62,537
Acquisition costs	51	1,893	136	1,893
Suspension of development				(7,200)
Depreciation and amortization	109,495	81,133	330,003	245,608
Total expenses	287,903	235,328	850,074	696,699
Operating income	164,510	151,082	456,665	461,623
Income from unconsolidated joint ventures	11,326	11,565	28,184	26,940
Interest and other income	1,252	1,814	4,179	5,641
Gains (losses) from investments in securities	(860)	731	(481)	253
Interest expense	(95,777)	(97,103)	(290,164)	(285,887)
Losses from early extinguishments of debt				(8,221)
Income from continuing operations	80,451	68,089	198,383	200,349
Gain on sale of real estate				2,734
Net income	80,451	68,089	198,383	203,083
Net income attributable to noncontrolling interests
Noncontrolling interests in property partnerships	(86)	(889)	(1,118)	(2,557)
Noncontrolling interest-redeemable preferred units of the Operating Partnership	(832)	(820)	(2,497)	(2,548)
Noncontrolling interest-common units of the Operating Partnership	(8,991)	(8,712)	(23,409)	(25,841)
Noncontrolling interest in gain on sale of real estate-common units of the Operating Partnership				(351)
Net income attributable to Boston Properties, Inc.	$ 70,542	$ 57,668	$ 171,359	$ 171,786
Basic earnings per common share attributable to Boston Properties, Inc.:
Net income	$ 0.48	$ 0.41	$ 1.18	$ 1.23
Weighted average number of common shares outstanding	147,006	139,595	145,006	139,215
Diluted earnings per common share attributable to Boston Properties, Inc.:
Net income	$ 0.48	$ 0.41	$ 1.18	$ 1.23
Weighted average number of common and common equivalent shares outstanding	147,622	140,193	145,625	139,874

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The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).

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The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

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Revenue from fees, whether long-term or daily, charged for parking facilities.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The aggregate revenue from real estate operations during the reporting period.

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In accordance with the provisions of their lease agreement, this element represents allowable charges due a landlord from its tenant. In retail store and office building leases, for example, tenant reimbursements may cover items such as taxes, utilities, and common area expenses.

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