SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - BALANCE SHEETS (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 296,023	$ 122,403
Total current assets	654,791	339,228
OTHER ASSETS:
Total other assets	189,760	121,500
TOTAL ASSETS	2,661,473	2,159,406	$ 2,166,016
CURRENT LIABILITIES:
Accrued taxes other than income taxes	22,967	17,787
Total current liabilities	255,571	177,577
Total liabilities	1,019,995	933,337
PARTNERS' CAPITAL:
Limited Partners - Common Unitholders 127,195,219 units outstanding	1,656,025	1,279,183
TOTAL LIABILITIES AND PARTNERS' CAPITAL	2,661,473	2,159,406
AHGP as the parent company
CURRENT ASSETS:
Cash and cash equivalents	2,174	2,173
Total current assets	2,174	2,173
OTHER ASSETS:
Investments in consolidated subsidiaries	1,653,951	1,277,110
Total other assets	1,653,951	1,277,110
TOTAL ASSETS	1,656,125	1,279,283
CURRENT LIABILITIES:
Accrued taxes other than income taxes	100	100
Total current liabilities	100	100
Total liabilities	100	100
PARTNERS' CAPITAL:
Limited Partners - Common Unitholders 127,195,219 units outstanding	1,656,025	1,279,183
TOTAL LIABILITIES AND PARTNERS' CAPITAL	$ 1,656,125	$ 1,279,283