Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Revenue
Base rent	$ 357,701	$ 338,925
Recoveries from tenants	52,568	45,849
Parking and other	22,428	19,064
Total rental revenue	432,697	403,838
Hotel revenue	6,816	5,948
Development and management services	8,149	7,428
Total revenue	447,662	417,214
Expenses
Rental	157,506	139,630
Hotel	6,099	5,739
General and administrative	27,619	24,643
Transaction costs	2,104	72
Depreciation and amortization	109,673	109,237
Total expenses	303,001	279,321
Operating income	144,661	137,893
Other income (expense)
Income from unconsolidated joint ventures	11,721	7,976
Interest and other income	1,646	974
Gains from investments in securities	801	373
Gains from early extinguishments of debt	767
Interest expense	(103,237)	(98,525)
Income from continuing operations	56,359	48,691
Discontinued operations
Loss from discontinued operations	(156)	(497)
Gain on forgiveness of debt from discontinued operations	17,807
Net income	74,010	48,194
Net income attributable to noncontrolling interests
Noncontrolling interests in property partnership	(546)	(529)
Noncontrolling interest - redeemable preferred units of the Operating Partnership	(801)	(823)
Noncontrolling interest - common units of the Operating Partnership	(6,089)	(6,090)
Noncontrolling interest in discontinued operations - common units of the Operating Partnership	(1,942)	61
Net income attributable to Boston Properties, Inc.	$ 64,632	$ 40,813
Basic earnings per common share attributable to Boston Properties, Inc.:
Income from continuing operations	$ 0.33	$ 0.29
Discontinued operations	$ 0.11
Net income	$ 0.44	$ 0.29
Weighted average number of common shares outstanding	148,343	142,095
Diluted earnings per common share attributable to Boston Properties, Inc.:
Income from continuing operations	$ 0.33	$ 0.29
Discontinued operations	$ 0.10
Net income	$ 0.43	$ 0.29
Weighted average number of common and common equivalent shares outstanding	148,746	142,504