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Fair Value Measurements
12 Months Ended
Dec. 31, 2015
Fair Value Disclosures [Abstract]  
Fair Value Measurements
FAIR VALUE MEASUREMENTS

Pursuant to the accounting guidance for fair value measurements, fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, consideration is given to the principal or most advantageous market and assumptions that market participants would use when pricing the asset or liability. The accounting guidance establishes a fair value hierarchy based on the level of independent, objective evidence surrounding the inputs used to measure fair value:
 
Level 1 – quoted prices in active markets for identical assets or liabilities.
Level 2 – inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or model-derived valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data.
Level 3 – unobservable inputs in which little or no market data exists.

Financial Instruments Recorded at Fair Value (in Millions)
 
December 31, 2015
 
December 31, 2014
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Level 1
 
Level 2
 
Level 3
 
Total
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
$
234.0

 

 
 
$
234.0

 
$
218.8

 

 
 
$
218.8

Deferred compensation asset (a)
 
$
1.5

 
 
$
1.5

 
 
$
3.2

 
 
$
3.2

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities:
 
 
 

 
 
 
 

 
 
 
 

 
 
 
 

Deferred compensation obligation (a)
 
1.4

 
 
1.4

 
 
3.0

 
 
3.0


 
(a)
The deferred compensation obligation represents the balance of deferred compensation plus net investment earnings. The deferred compensation plan is informally funded through a rabbi trust using variable universal life insurance. The cash surrender value of the life insurance policies is designed to track the deemed investments of the plan participants. Investment crediting options consist of institutional and retail investment funds. The deemed investments are classified within Level 2 of the valuation hierarchy because (i) of the indirect method of investing and (ii) unit prices of institutional funds are not quoted in active markets.

There have been no transfers between Levels 1, 2 or 3 during the periods presented.

Other Financial Instruments

As of December 31, 2015 and December 31, 2014, the balance sheet carrying amounts for cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities (excluding the deferred compensation obligation described above), and payables under SWU purchase agreements approximate fair value because of the short-term nature of the instruments.

The estimated fair value of the PIK Toggle Notes was $36.9 million at December 31, 2015 and $121.2 million at December 31, 2014 based on the most recent trading prices as of the balance sheet date (Level 1).