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Noncontrolling Interests Redeemable common units of Boston Properties Limited Partnership (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |
Conversion of redeemable partnership units | $ 0 | $ 0 | $ 0
Adjustment to reflect redeemable partnership units at redemption value |  | 5,128 | 11,686
Boston Properties Limited Partnership |  |  |
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |
Beginning Balance | 2,286,689 | 2,310,046 | 1,710,218
Contributions | 31,395 | 39,030 | 23,990
Net income | 59,260 | 66,951 | 50,862
Distributions | (49,087) | (69,447) | (126,948)
Conversion of redeemable partnership units | (6,461) | (14,343) | (2,700)
Unearned compensation | (3,464) | (4,579) | (2,813)
Other Comprehensive Income (Loss), | (4,379) | (554) | 256
Adjustment to reflect redeemable partnership units at redemption value | (51,913) | (40,415) | 657,181
Ending Balance | $ 2,262,040 | $ 2,286,689 | $ 2,310,046

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