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Fair Value (Tables)
 3 Months Ended
Mar. 31, 2021
Fair Value Disclosures [Abstract]  
Carrying and Estimated Fair Value
The estimated fair value of the Company’s outstanding debt is as follows:
 March 31, 2021December 31, 2020
 Fair value
hierarchy		Carrying
Amount		Fair
Value		Carrying
Amount		Fair
Value
Long-term debt (including current maturities):
Term loans and senior notesLevel 2$5,094 $5,159 $5,153 $5,138