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Financial Instruments and Fair Value Measurements
12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
Financial Instruments and Fair Value Measurements Financial Instruments and Fair Value Measurements
 
Fair value is defined as the price that would be received from the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The disclosure for assets and liabilities measured at fair value requires allocation to a three-level valuation hierarchy. This valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. Categorization within this hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
 
We believe that the carrying values reflected in our consolidated balance sheets reasonably approximate the fair values for cash and cash equivalents, accounts receivable, escrow deposits, loans receivable, line of credit payable and commercial paper borrowings, term loans and all other liabilities, due to their short-term nature or interest rates and terms that are consistent with market, except for our mortgages payable assumed in connection with acquisitions and our senior notes and bonds payable, which are disclosed as follows (dollars in millions):

At December 31, 2020Carrying valueEstimated fair value
Mortgages payable assumed in connection with acquisitions (1)
$299.6 $309.4 
Notes and bonds payable (2)
8,302.4 9,324.0 
At December 31, 2019Carrying valueEstimated fair value
Mortgages payable assumed in connection with acquisitions (1)
$408.4 $417.7 
Notes and bonds payable (2)
6,317.6 6,826.1 
(1) Excludes non-cash net premiums recorded on the mortgages payable. The unamortized balance of these net premiums is $1.7 million at December 31, 2020, and $3.0 million at December 31, 2019. Also excludes deferred financing costs of $973,000 at December 31, 2020, and $1.3 million at December 31, 2019.
(2) Excludes non-cash original issuance premiums and discounts recorded on notes payable. The unamortized balance of the net original issuance premiums was $14.6 million at December 31, 2020, and $6.3 million at December 31, 2019. Also excludes deferred financing costs of $49.2 million at December 31, 2020 and $35.9 million at December 31, 2019.

The estimated fair values of our mortgages payable assumed in connection with acquisitions and private senior notes payable have been calculated by discounting the future cash flows using an interest rate based upon the relevant forward interest rate curve, plus an applicable credit-adjusted spread. Because this methodology includes unobservable inputs that reflect our own internal assumptions and calculations, the measurement of estimated fair values related to our mortgages payable is categorized as level three on the three-level valuation hierarchy.
 
The estimated fair values of our publicly-traded senior notes and bonds payable are based upon indicative market prices and recent trading activity of our senior notes and bonds payable. Because this methodology includes inputs that are less observable by the public and are not necessarily reflected in active markets, the measurement of the estimated fair values related to our notes and bonds payable is categorized as level two on the three-level valuation hierarchy.
The following table summarizes the terms and fair values of our derivative financial instruments at December 31, 2020 and 2019 (dollars in millions):
Derivative Type
Accounting Classification
Hedge Designation
Notional Amount
Strike
Effective Date
Maturity Date
Fair Value - asset (liability)
December 31,December 31,December 31,December 31,
2020201920202019
Interest rate swap (1)
Derivative
Cash flow
$— $7.06.03%09/25/201209/03/2021$— $(0.2)
Interest rate swap
Derivative
Cash flow
— 250.01.72%06/30/201506/30/2020— (0.1)
Interest rate swap
Derivative
Cash flow
250.0 250.03.04%10/24/201803/24/2024(22.6)(14.7)
Cross-currency swap (2)
Derivative
Cash flow
41.6 41.6(3)05/20/201905/22/2034(5.2)(2.6)
Cross-currency swap (2)
Derivative
Cash flow
41.6 41.6(4)05/20/201905/22/2034(5.1)(2.6)
Cross-currency swap (2)
Derivative
Cash flow
41.6 41.6(5)05/20/201905/22/2034(5.4)(2.9)
Cross-currency swap (2)
Derivative
Cash flow
41.6 41.6(6)05/20/201905/22/2034(5.7)(3.2)
Currency exchange swap (2)
DerivativeN/A625.0 (7)12/23/202001/29/2021(8.2)
Forward-starting swapDerivative
Cash flow
75.0 2.02%(8)06/30/2033(5.0)
Forward-starting swapDerivative
Cash flow
75.0 1.94%(8)11/30/2032(5.2)
Forward-starting swapDerivative
Cash flow
25.0 1.67%(8)11/30/2032(1.1)
Forward-starting swapDerivative
Cash flow
125.0 1.75%(8)06/30/2033(5.2)
Forward-starting swapHybrid debt
Cash flow
125.0 1.88%(8)11/30/2032(7.9)
Forward-starting swapHybrid debt
Cash flow
75.0 2.00%(8)06/30/2033(4.9)
$1,541.4 $673.4$(81.5)$(26.3)
(1)In connection with the early prepayment of a mortgage loan during the fourth quarter of 2020, the swap was terminated with a payment of $0.2 million and we recognized an associated loss on derivative of $0.2 million.
(2)Represents British Pound Sterling, or GBP, United States Dollar, or USD, cross-currency swap.
(3)GBP fixed rates initially at 4.82% and escalating to 10.96%, and USD fixed rate at 9.800%.
(4)GBP fixed rates initially at 4.82% and escalating to 10.96%, and USD fixed rate at 9.803%.
(5)GBP fixed rates initially at 4.82% and escalating to 10.96%, and USD fixed rate at 9.745%.
(6)GBP fixed rates initially at 4.82% and escalating to 10.96%, and USD fixed rate at 9.755%.
(7) The forward GBP-USD exchange rate is 1.35.
(8) The five treasury rate locks which were entered into during February 2020 were terminated in June 2020 and converted into six forward starting interest rate swaps through a cashless settlement of the terminated treasury rate locks.
We measure our derivatives at fair value and include the balances within other assets and accounts payable and accrued expenses on our consolidated balance sheets.
We have agreements with each of our derivative counterparties containing provisions under which we could be declared in default on our derivative obligations if repayment of our indebtedness is accelerated by the lender due to our default.
We utilize interest rate swap agreements to manage interest rate risk and cross-currency swaps to manage foreign currency risk. The valuation of these instruments is determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves, spot and forward rates, as well as option volatility. 
To comply with the provisions of ASC 820, Fair Value Measurement, we incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we have considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.
Although we have determined that the majority of the inputs used to value our derivatives fall within level two on the three-level valuation hierarchy, the credit valuation adjustments associated with our derivatives utilize level three inputs, such as estimates of current credit spreads, to evaluate the likelihood of default by ourselves and our counterparties. However, at December 31, 2020 and 2019, we assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives. As a result, we determined that our derivative valuations in their entirety are classified as level two on the three-level valuation hierarchy.
Unrealized gains and losses in AOCI are reclassified to interest expense in the case of interest rate swaps and to foreign currency gains and losses, net in the case of cross-currency swaps, when the related hedged items are recognized. During 2020, we reclassified $11.4 million from AOCI as an increase to interest expense for our interest rate swaps and $3.6 million for 2020 in cross-currency swap losses into foreign currency and derivative gains, net. During 2019, we reclassified $3.4 million from AOCI as an increase to interest expense for our interest rate swaps and $5.5 million for 2019 in cross-currency swap losses into foreign currency and derivative gains, net. During 2018, there were no outstanding derivatives designated as hedges and accounted for through AOCI. As a result, there were no amounts to reclassify from AOCI during 2018.

We expect to reclassify $10.3 million from AOCI as an increase to interest expense relating to interest rate swaps and $1.0 million from AOCI to foreign currency gain relating to cross-currency swaps within the next twelve months.