Warrior Met Coal (HCC) 10-K/A 18 May 23 2022 FY Annual report (amended) Financial data

Cover Page

Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Feb. 13, 2023	Jun. 30, 2022
Document Information [Line Items]
Document Type	10-K/A
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-38061
Entity Registrant Name	Warrior Met Coal, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	81-0706839
Entity Address, Address Line One	16243 Highway 216
Entity Address, City or Town	Brookwood
Entity Address, State or Province	AL
Entity Address, Postal Zip Code	35444
City Area Code	205
Local Phone Number	554-6150
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1.9
Entity Common Stock, Shares Outstanding		51,923,478
Documents Incorporated by Reference [Text Block]	The following documents (or parts thereof) are incorporated by reference into the following parts of this Form 10-K/A:
Entity Central Index Key	0001691303
Document Fiscal Year Focus	2022
Amendment Flag	true
Document Fiscal Period Focus	FY
Amendment Description	This Amendment No. 1 on Form 10-K/A (this “Amendment”) to the Annual Report on Form 10-K of Warrior Met Coal, Inc. (the “Company”) for the fiscal year ended December 31, 2022, filed with the Securities and Exchange Commission (the “Commission”) on February 15, 2023 (the “Original Filing”) is being filed solely to file (i) a revised Exhibit 96.1, Technical Report Summary for Mine No. 7 - S-K 1300 Report, (ii) a revised Exhibit 96.2, Technical Report Summary for Mine No. 4 - S-K 1300 Report, and (ii) a revised Exhibit 96.3, Technical Report Summary for Blue Creek - S-K 1300 Report. No other changes have been made to the Original Filing or any other exhibit. This Amendment speaks as of the filing date of the Original Filing and does not reflect events occurring after the filing date of the Original Filing or modify or update any disclosures that may be affected by subsequent events. Except as described above, this Amendment does not alter or update any other information contained in the Original Filing. The Original Filing continues to speak as of the date of the Original Filing, and the Company has not updated the disclosures contained therein to reflect any events that have occurred as of a date subsequent to the date of the Original Filing. Accordingly, this Amendment should be read in conjunction with the Original Filing, and the Company’s filings made with the Commission subsequent to the filing of the Original Filing. Pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended, this Amendment also contains new certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, which are attached hereto. Paragraphs 3, 4, and 5 of the certifications have been omitted since no financial statements have been included in this Amendment and it does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K. This Amendment does not contain new certifications pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, as these certifications were included as exhibits to the Original Filing.
Auditor Firm ID	42
Auditor Name	Ernst & Young LLP
Auditor Location	Birmingham, Alabama
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	HCC
Security Exchange Name	NYSE
Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Rights to Purchase Series A Junior Participating Preferred Stock, par value $0.01 per share
Security Exchange Name	NYSE
No Trading Symbol Flag	true