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Fair Value of Financial Instruments | 6 Months Ended
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Jun. 30, 2022
Fair Value Disclosures [Abstract] |
Fair Value of Financial Instruments | Fair Value of Financial Instruments The following methods and assumptions were used to estimate the fair value of each class of financial instrument for which it is practical to estimate that value. •Cash and cash equivalents - The carrying amount approximates fair value due to the short term maturity of these investments. •Borrowings under the Unsecured Credit Facility and the Term Loans Due 2024 and 2026 - The carrying amount approximates fair value because the borrowings are based on variable market interest rates. •Senior Notes and Mortgage Notes payable - The fair value of notes and bonds payable is estimated using cash flow analyses, based on the Company’s current interest rates for similar types of borrowing arrangements. •Interest rate swap agreements - Interest rate swap agreements are recorded in other liabilities on the Company's Condensed Consolidated Balance Sheets at fair value. Fair value is estimated by utilizing pricing models that consider forward yield curves and discount rates. The table below details the fair values and carrying values for notes and bonds payable at June 30, 2022 and December 31, 2021.
| June 30, 2022 | December 31, 2021
Dollars in millions | CARRYING VALUE | FAIR VALUE | CARRYING VALUE | FAIR VALUE
Notes and bonds payable 1 | $ | 2,063.8 |  | $ | 1,955.6 |  | $ | 1,801.3 |  | $ | 1,797.4 |
1 Level 2 – model-derived valuations in which significant inputs and significant value drivers are observable in active markets.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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