Financial Instruments

12 Months Ended

Dec. 31, 2018

Financial Instruments

Financial Instruments

(10) Financial Instruments

The carrying values of accounts receivable and accounts payable at December 31, 2017 and 2018 approximated market values because of their short‑term nature.  The carrying values of the amounts outstanding under the Credit Facility and Midstream Credit Facility at December 31, 2017 and 2018 approximated fair value because the variable interest rates are reflective of current market conditions.

Based on Level 2 market data inputs, the fair value of the Antero’s senior notes was approximately $3.5 billion and $3.3 billion at December 31, 2017 and 2018.  Based on Level 2 market data inputs, the fair value of Antero Midstream’s senior notes was approximately $670 million at December 31, 2017 and $608 million at December 31, 2018.

See Note 11 for information regarding the fair value of derivative financial instruments.