Stockholders' Equity / Partners' Capital (Tables)

12 Months Ended

Dec. 31, 2018

The following table presents Boston Properties, Inc.’s dividends per share and Boston Properties Limited Partnership’s distributions per OP Unit and LTIP Unit paid or payable in 2018:



Record Date	Payment Date	Dividend (Per Share)		Distribution (Per Unit)
December 31, 2018	January 30, 2019		$0.95		$0.95
September 28, 2018	October 31, 2018		$0.95		$0.95
June 29, 2018	July 31, 2018		$0.80		$0.80
March 29, 2018	April 30, 2018		$0.80		$0.80
December 29, 2017	January 30, 2018		$0.80		$0.80

Series B Preferred Stock [Member]

Class of Stock [Line Items]

Dividends Declared [Table Text Block]

The following table presents Boston Properties Inc.’s dividends per share on its outstanding Series B Preferred Stock paid or payable in 2018:



Record Date	Payment Date	Dividend (Per Share)
February 4, 2019	February 15, 2019		$32.8125
November 2, 2018	November 15, 2018		$32.8125
August 3, 2018	August 15, 2018		$32.8125
May 4, 2018	May 15, 2018		$32.8125
February 2, 2018	February 15, 2018		$32.8125

Boston Properties Limited Partnership

Class of Stock [Line Items]

Schedule Of Changes In Partners Capital Unit [Table Text Block]

The following table presents the changes in the issued and outstanding partners’ capital units since January 1, 2016:



	General Partner Units	Limited Partner Units	Total Partners’ Capital Units
Outstanding at December 31, 2015	1,715,092	151,864,874	153,579,966
Units issued to Boston Properties, Inc. related to Common Stock issued under the Employee Stock Purchase Plan	72	5,623	5,695
Units issued to Boston Properties, Inc. related to Common Stock issued under the Stock Option and Incentive Plan, net	172	13,485	13,657
Units issued to Boston Properties, Inc. related to Common Stock issued in exchange for OP Units	2,407	188,450	190,857
Outstanding at December 31, 2016	1,717,743	152,072,432	153,790,175
Units issued to Boston Properties, Inc. related to Common Stock issued under the Employee Stock Purchase Plan	21	6,296	6,317
Units issued to Boston Properties, Inc. related to Common Stock issued under the Stock Option and Incentive Plan, net	111	33,046	33,157
Units issued to Boston Properties, Inc. related to Common Stock issued in exchange for OP Units	1,665	493,972	495,637
Outstanding at December 31, 2017	1,719,540	152,605,746	154,325,286
Units issued to Boston Properties, Inc. related to Common Stock issued under the Employee Stock Purchase Plan	132	6,136	6,268
Units issued to Boston Properties, Inc. related to Common Stock issued under the Stock Option and Incentive Plan, net	919	42,869	43,788
Units issued to Boston Properties, Inc. related to Common Stock issued in exchange for OP Units	1,745	81,391	83,136
Outstanding at December 31, 2018	1,722,336	152,736,142	154,458,478

Schedule of Changes in Series B Preferred Units [Table Text Block]

The following table reflects the activity of the Series B Preferred Units for the years ended December 31, 2018, 2017 and 2016 (in thousands), which activity is included within Boston Properties Limited Partnership’s Consolidated Statements of Partners’ Capital:



Balance at December 31, 2015	$	193,623
Net income	10,500
Distributions	(10,500		)
Balance at December 31, 2016	193,623
Net income	10,500
Distributions	(10,500		)
Balance at December 31, 2017	193,623
Net income	10,500
Distributions	(10,500		)
Balance at December 31, 2018	$	193,623