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Fair Value of Financial Instruments (Tables)
 6 Months Ended
Jun. 30, 2019
Fair Value Disclosures [Abstract]  
Carrying and Estimated Fair Value
The following table presents assets and liabilities included in the Company's condensed consolidated balance sheets as of June 30, 2019 and December 31, 2018 that are recognized at fair value on a recurring basis, and indicate the fair value hierarchy utilized to determine such fair value:
 
 
 
June 30, 2019
 
December 31, 2018
 
Fair value
hierarchy
 
Carrying
Amount
 
Fair
Value
 
Carrying
Amount
 
Fair
Value
Derivative instruments:
 
 
 
 
 
 
 
 
 
Equity swap agreement
Level 2
 
$
3

 
$
3

 
$
4

 
$
4

Commodity contracts
Level 2
 
$
—

 
$
—

 
$
(2
)
 
$
(2
)

Estimated fair values of the Company's outstanding debt were:
 
 
 
June 30, 2019
 
December 31, 2018
 
Fair value
hierarchy
 
Carrying
Amount
 
Fair
Value
 
Carrying
Amount
 
Fair
Value
Long-term debt (including current maturities):
 
 
 
 
 
 
 
 
 
Term loans and senior notes
Level 2
 
$
5,247

 
$
5,035

 
$
5,307

 
$
5,218