Derivative and Hedging Instruments Derivatives and Hedging Activities Notional Table (Tables)

12 Months Ended

Dec. 31, 2015

Derivative Instruments and Hedging Activities Disclosures [Line Items]

Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]

Boston Properties Limited Partnership’s and 767 Fifth Avenue Partners LLC’s interest rate swap contracts consisted of the following at December 31, 2015 (dollars in thousands):

Derivative Instrument	Aggregate Notional Amount		Effective Date	Maturity Date	Strike Rate Range					Balance Sheet Location	Fair Value
					Low			High
Boston Properties Limited Partnership:
Interest Rate Swaps	$	400,000	September 1, 2016	September 1, 2026	2.348	%	-	2.571	%	Other Liabilities	$	(5,419	)
Interest Rate Swaps	150,000		September 1, 2016	September 1, 2026	2.129	%	-	2.325	%	Prepaid Expenses and Other Assets	1,188
	$	550,000									$	(4,231	)
767 Fifth Partners LLC:
Interest Rate Swaps	$	250,000	June 7, 2017	June 7, 2027	2.677	%	-	2.950	%	Other Liabilities	$	(7,247	)
Interest Rate Swaps	150,000		June 7, 2017	June 7, 2027	2.336	%	-	2.430	%	Prepaid Expenses and Other Assets	1,176
	$	400,000									$	(6,071	)
	$	950,000									$	(10,302	)

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table presents the location in the financial statements of the losses recognized related to the Company’s cash flow hedges for the years ended December 31, 2015, 2014 and 2013:

	Year ended December 31,
	2015			2014			2013
	(in thousands)
Amount of loss related to the effective portion recognized in other comprehensive loss	$	(10,302	)	$	—		$	—
Amount of loss related to the effective portion subsequently reclassified to earnings (1)	$	(2,510	)	$	(2,508	)	$	(2,513	)
Amount of gain (loss) related to the ineffective portion and amount excluded from effectiveness testing	$	—		$	—		$	—

___________

(1) Consists of amounts from interest rate hedging programs entered into prior to 2015.

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Boston Properties, Inc.

The following table reflects the changes in accumulated other comprehensive loss for Boston Properties, Inc. for the years ended December 31, 2015, 2014 and 2013 (in thousands):

Balance at December 31, 2012	$	(13,817	)
Amortization of interest rate contracts (1)	2,513
Other comprehensive income attributable to noncontrolling interests	(252		)
Balance at December 31, 2013	(11,556		)
Amortization of interest rate contracts (1)	2,508
Other comprehensive income attributable to noncontrolling interests	(256		)
Balance at December 31, 2014	(9,304		)
Effective portion of interest rate contracts	(10,302		)
Amortization of interest rate contracts (1)	2,510
Other comprehensive loss attributable to noncontrolling interests	2,982
Balance at December 31, 2015	$	(14,114	)

___________

(1)

Boston Properties Limited Partnership [Member]

Derivative Instruments and Hedging Activities Disclosures [Line Items]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Boston Properties Limited Partnership

The following table reflects the changes in accumulated other comprehensive loss for Boston Properties Limited Partnership for the years ended December 31, 2015, 2014 and 2013 (in thousands):

Balance at December 31, 2012	$	(17,994	)
Amortization of interest rate contracts (1)	2,513
Balance at December 31, 2013	(15,481		)
Amortization of interest rate contracts (1)	2,508
Balance at December 31, 2014	(12,973		)
Effective portion of interest rate contracts	(10,302		)
Amortization of interest rate contracts (1)	2,510
Other comprehensive loss attributable to noncontrolling interests in property partnership	2,428
Balance at December 31, 2015	$	(18,337	)

___________

(1) Consists of amounts from interest rate hedging programs entered into prior to 2015.