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Fair Value Measurements
6 Months Ended
Jun. 30, 2022
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The Financial Instruments Topic in the ASC requires disclosures about fair value of financial instruments in annual reports as well as in quarterly reports. For CSX, this statement applies to certain investments, long-term debt and interest rate derivatives. Disclosure of the fair value of pension plan assets is only required annually. Also, this rule clarifies the definition of fair value for financial reporting, establishes a framework for measuring fair value and requires additional disclosures about the use of fair value measurements.

Various inputs are considered when determining the value of the Company's investments, pension plan assets, long-term debt and interest rate derivatives. The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in these securities. These inputs are summarized in the three broad levels listed below.

Level 1 - observable market inputs that are unadjusted quoted prices for identical assets or liabilities in active markets;
Level 2 - other significant observable inputs (including quoted prices for similar securities, interest rates, credit risk, etc.); and
Level 3 - significant unobservable inputs (including the Company's own assumptions about the assumptions market participants would use in determining the fair value of investments).

The valuation methods described below may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

Investments
    The Company's investment assets are carried at fair value on the consolidated balance sheet in accordance with the Fair Value Measurements and Disclosures Topic in the ASC. They are valued with assistance from a third-party trustee and consist of fixed income mutual funds, corporate bonds and government securities. The fixed income mutual funds are valued at the net asset value of shares held based on quoted market prices determined in an active market, which are Level 1 inputs. The corporate bonds and government securities are valued using broker quotes that utilize observable market inputs, which are Level 2 inputs.

    The Company's investment assets are summarized in the following table.
June 30, 2022December 31, 2021
(Dollars in Millions)Level 1Level 2TotalLevel 1Level 2Total
Fixed Income Mutual Funds$87 $ $87 $75 $— $75 
Corporate Bonds 52 52 — 63 63 
Government Securities 22 22 — 26 26 
Total investments at fair value$87 $74 $161 $75 $89 $164 
Total investments at amortized cost$163 $156 
NOTE 9.    Fair Value Measurements, continued

These investments have the following maturities:
(Dollars in millions)June 30,
2022
December 31,
2021
Less than 1 year
$88 $77 
1 - 5 years
25 28 
5 - 10 years
10 12 
Greater than 10 years
38 47 
Total investments at fair value
$161 $164 

Long-term Debt
    Long-term debt is reported at carrying amount on the consolidated balance sheets and is the Company's only financial instrument with fair values significantly different from their carrying amounts. The majority of the Company's long-term debt is valued with assistance from a third party that utilizes closing transactions, market quotes or market values of comparable debt. For those instruments not valued by the third party, the fair value has been estimated by applying market rates of similar instruments to the scheduled contractual debt payments and maturities. These market rates are provided by the same third party. All of the inputs used to determine the fair value of the Company's long-term debt are Level 2 inputs.

The fair value of outstanding debt fluctuates with changes in a number of factors. Such factors include, but are not limited to, interest rates, market conditions, credit ratings, values of similar financial instruments, size of the transaction, cash flow projections and comparable trades. Fair value will exceed carrying value when the current market interest rate is lower than the interest rate at which the debt was originally issued. The fair value of a company's debt is a measure of its current value under present market conditions. It does not impact the financial statements under current accounting rules. The fair value and carrying value of the Company's long-term debt is as follows:
(Dollars in millions)June 30,
2022
December 31,
2021
Long-term Debt (Including Current Maturities):
Fair Value$15,302 $19,439 
Carrying Value16,210 16,366 

Interest Rate Derivatives
The Company’s fixed-to-floating and forward starting interest rate swaps are carried at their respective fair values, which are determined with assistance from a third party based upon pricing models using inputs observed from actively quoted markets. All of the inputs used to determine the fair value of the swaps are Level 2 inputs. The fair value of the Company’s fixed-to-floating interest rate swaps was a liability of $72 million as of June 30, 2022. The fair value of the Company’s forward starting interest rate swap asset was $162 million and $91 million as of June 30, 2022 and December 31, 2021, respectively. See Note 7, Debt and Credit Agreements, for further information.