9.	Derivative and Other Fair Value Instruments

The valuation of financial instruments requires the Company to make estimates and judgments that affect the fair value of the instruments. The Company, where possible, bases the fair values of its financial instruments, including its derivative instruments, on listed market prices and third party quotes. Where these are not available, the Company bases its estimates on current instruments with similar terms and maturities or on other factors relevant to the financial instruments.

In the normal course of business, the Company is exposed to the effect of interest rate changes. The Company seeks to manage these risks by following established risk management policies and procedures including the use of derivatives to hedge interest rate risk on debt instruments. The Company may also use derivatives to manage commodity prices in the daily operations of the business.

A three-level valuation hierarchy exists for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The three levels are defined as follows:

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Level 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.

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Level 2 – Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

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Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement.

The Company’s derivative positions are valued using models developed by the respective counterparty as well as models developed internally by the Company that use as their basis readily observable market parameters (such as forward yield curves and credit default swap data). Employee holdings other than Common Shares within the supplemental executive retirement plan (the “SERP”) are valued using quoted market prices for identical assets and are included in other assets and other liabilities on the consolidated balance sheets. Redeemable Noncontrolling Interests – Operating Partnership/Redeemable Limited Partners are valued using the quoted market price of Common Shares. The fair values disclosed for mortgage notes payable and unsecured debt (including its commercial paper) were calculated using indicative rates provided by lenders of similar loans in the case of mortgage notes payable and the private unsecured debt (including its commercial paper) and quoted market prices for each underlying issuance in the case of the public unsecured notes.

The fair values of the Company’s financial instruments (other than mortgage notes payable, unsecured notes, commercial paper, line of credit and derivative instruments), including cash and cash equivalents and other financial instruments, approximate their carrying or contract value. The following table provides a summary of the carrying and fair values for the Company’s mortgage notes payable and unsecured debt (including its commercial paper and line of credit, if applicable) at September 30, 2017 and December 31, 2016, respectively (amounts in thousands):

	September 30, 2017				December 31, 2016
	Estimated Fair Value (Level 2)		Carrying Value		Estimated Fair Value (Level 2)		Carrying Value
Mortgage notes payable, net	$	3,630,477	$	3,619,180	$	4,161,001	$	4,119,181
Unsecured debt, net		5,640,095		5,373,092		5,030,330		4,868,077
Total debt, net	$	9,270,572	$	8,992,272	$	9,191,331	$	8,987,258

The following table summarizes the Company’s consolidated derivative instruments at September 30, 2017 (dollar amounts are in thousands):

	Fair Value Hedges (1)			Forward Starting Swaps (2)
Current Notional Balance	$	450,000		$	250,000
Lowest Interest Rate		2.375	%		2.1478	%
Highest Interest Rate		2.375	%		2.2895	%
Earliest Maturity Date		2019			2028
Latest Maturity Date		2019			2029

(1)	Fair Value Hedges – Converts outstanding fixed rate unsecured notes ($450.0 million 2.375% notes due July 1, 2019) to a floating interest rate of 90-Day LIBOR plus 0.61%.

(2)

Forward Starting Swaps – Designed to partially fix interest rates in advance of planned future debt issuances. Of the $250.0 million notional balance, $200.0 million of these swaps have mandatory counterparty terminations in 2019 and are targeted for 2018 debt issuances while $50.0 million of these swaps have mandatory counterparty terminations in 2020 and are targeted for 2019 debt issuances.

The following tables provide a summary of the fair value measurements for each major category of assets and liabilities measured at fair value on a recurring basis and the location within the accompanying consolidated balance sheets at September 30, 2017 and December 31, 2016, respectively (amounts in thousands):

				Fair Value Measurements at Reporting Date Using
Description	Balance Sheet Location	9/30/2017		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Fair Value Hedges	Other Assets	$	444	$	—	$	444	$	—
Forward Starting Swaps	Other Assets		3,921		—		3,921		—
Supplemental Executive Retirement Plan	Other Assets		136,774		136,774		—		—
Total		$	141,139	$	136,774	$	4,365	$	—

Liabilities
Supplemental Executive Retirement Plan	Other Liabilities	$	136,774	$	136,774	$	—	$	—
Total		$	136,774	$	136,774	$	—	$	—

Redeemable Noncontrolling Interests –
Operating Partnership/Redeemable
Limited Partners	Mezzanine	$	380,541	$	—	$	380,541	$	—

				Fair Value Measurements at Reporting Date Using
Description	Balance Sheet Location	12/31/2016		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Fair Value Hedges	Other Assets	$	1,857	$	—	$	1,857	$	—
Supplemental Executive Retirement Plan	Other Assets		124,420		124,420		—		—
Total		$	126,277	$	124,420	$	1,857	$	—

Liabilities
Supplemental Executive Retirement Plan	Other Liabilities	$	124,420	$	124,420	$	—	$	—
Total		$	124,420	$	124,420	$	—	$	—

Redeemable Noncontrolling Interests –
Operating Partnership/Redeemable
Limited Partners	Mezzanine	$	442,092	$	—	$	442,092	$	—

The following tables provide a summary of the effect of fair value hedges on the Company’s accompanying consolidated statements of operations and comprehensive income for the nine months ended September 30, 2017 and 2016, respectively (amounts in thousands):

September 30, 2017 Type of Fair Value Hedge	Location of Gain/(Loss) Recognized in Income on Derivative	Amount of Gain/(Loss) Recognized in Income on Derivative			Hedged Item	Income Statement Location of Hedged Item Gain/(Loss)	Amount of Gain/(Loss) Recognized in Income on Hedged Item
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Interest Rate Swaps	Interest expense	$	(1,413	)	Fixed rate debt	Interest expense	$	1,413
Total		$	(1,413	)			$	1,413

September 30, 2016 Type of Fair Value Hedge	Location of Gain/(Loss) Recognized in Income on Derivative	Amount of Gain/(Loss) Recognized in Income on Derivative		Hedged Item	Income Statement Location of Hedged Item Gain/(Loss)	Amount of Gain/(Loss) Recognized in Income on Hedged Item
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Interest Rate Swaps	Interest expense	$	4,563	Fixed rate debt	Interest expense	$	(4,563	)
Total		$	4,563			$	(4,563	)

The following tables provide a summary of the effect of cash flow hedges on the Company’s accompanying consolidated statements of operations and comprehensive income for the nine months ended September 30, 2017 and 2016, respectively (amounts in thousands):

	Effective Portion						Ineffective Portion
September 30, 2017 Type of Cash Flow Hedge	Amount of Gain/(Loss) Recognized in OCI on Derivative		Location of Gain/(Loss) Reclassified from Accumulated OCI into Income	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income			Location of Gain/(Loss) Recognized in Income on Derivative	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Forward Starting Swaps	$	5,216	Interest expense	$	(14,019	)	N/A	$	—
Total	$	5,216		$	(14,019	)		$	—

	Effective Portion							Ineffective Portion
September 30, 2016 Type of Cash Flow Hedge	Amount of Gain/(Loss) Recognized in OCI on Derivative			Location of Gain/(Loss) Reclassified from Accumulated OCI into Income	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income			Location of Gain/(Loss) Recognized in Income on Derivative	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income
Derivatives designated as hedging instruments:
Interest Rate Contracts:
Forward Starting Swaps	$	(4,240	)	Interest expense	$	(37,262	)	N/A	$	—
Total	$	(4,240	)		$	(37,262	)		$	—

As of September 30, 2017 and December 31, 2016, there were approximately $94.7 million and $113.9 million in deferred losses, net, included in accumulated other comprehensive (loss), respectively, related to derivative instruments. Based on the estimated fair values of the net derivative instruments at September 30, 2017, the Company may recognize an estimated $21.4 million of accumulated other comprehensive (loss) as additional interest expense during the twelve months ending September 30, 2018.

In August 2017, the Company received $1.3 million to settle four forward starting ten-year swaps in conjunction with the issuance of $400.0 million of ten-year fixed rate public notes. The entire $1.3 million was initially deferred as a component of accumulated other comprehensive (loss) and will be recognized as a decrease to interest expense over the ten-year term of the notes.