Fair Value Measurements

12 Months Ended

Dec. 31, 2017

FAIR VALUE MEASUREMENTS

Fair value is measured based on an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions market participants would use in pricing an asset or liability. Assets and liabilities measured at fair value are based on a market valuation approach using prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. As a basis for considering such assumptions, a three-tiered fair value hierarchy is established, which prioritizes the inputs used in measuring fair value as follows: (Level 1) observable inputs such as quoted prices in active markets; (Level 2) inputs, other than the quoted prices in active markets that are observable, either directly or indirectly; and (Level 3) unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions. We had no (Level 3) assets or liabilities at December 31, 2017.

Assets and liabilities measured at fair value on a recurring basis at December 31, 2017 and 2016 are as follows:



	Total Cost Basis				Quoted Prices In Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)					Total Fair Value
Millions of dollars	2017		2016		2017		2016		2017			2016		2017			2016
Money market funds ⁽¹⁾	$	2	$	29	$	2	$	29	$	—		$	—	$	2		$	29
Net derivative contracts	—		—		—		—		(66		)	41		(66		)	41
Available for sale investments	6		4		22		16		—			—		22			16
Held to maturity investments⁽²⁾	60		—		60		—		—			—		60			—

⁽¹⁾ Money market funds are comprised primarily of government obligations and other first tier obligations.

⁽²⁾ Held to maturity investments are primarily comprised of certificate of deposits with an approximate maturity term of less than six months.

Other Fair Value Measurements

The fair value of long-term debt (including current maturities) was $4.95 billion and $4.47 billion at December 31, 2017 and 2016, respectively, and was estimated using a discounted cash flow analysis based on incremental borrowing rates for similar types of borrowing arrangements (Level 2 input).

- 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.

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