Fair Value Information

12 Months Ended

Dec. 31, 2017

The following fair value information is based on a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The three levels in the hierarchy used to measure fair value are:

Level 1: Unadjusted quoted prices in active markets accessible at the reporting date for identical assets and liabilities.

Level 2: Quoted prices for similar assets or liabilities in active markets. Quoted prices for identical or similar assets and liabilities in markets that are not considered active or financial instruments for which all significant inputs are observable, either directly or indirectly.

Level 3: Prices or valuations that require inputs that are significant to the valuation and are unobservable.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

The following table includes the fair value of our financial instruments for which disclosure of fair value is required (in millions):



	Fair Value Hierarchy Level	December 31, 2017				December 31, 2016
	Fair Value Hierarchy Level	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Assets
Cash and cash equivalents	1	$	219.7	$	219.7	$	113.7	$	113.7
Liabilities
Senior unsecured notes	1	247.1		259.7		246.5		256.4
Debt	2	333.8		341.1		332.5		341.3

Cash equivalents are recorded at cost, which approximates fair value due to their short-term nature.

The fair value of our senior unsecured notes is determined using observable market prices based on trading activity on a primary exchange. For the years ended December 31, 2017 and 2016, there were no transfers among Level 1, 2 or 3 fair value determinations. Transfers between levels occur when there are changes in the observability of inputs. Changes between levels are assumed to occur at the beginning of the year.

- 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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