Archaea Energy Inc. Quarterly report pursuant to Section 13 or 15(d)

Provision for Income Tax - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Sep. 15, 2021
Income Tax Examination [Line Items]
Income tax expense	$ 0	$ 0
Effective income tax rate	0.00%	0.00%
Opco \| Total controlling interests
Income Tax Examination [Line Items]
Noncontrolling interest, ownership percentage by parent	67.10%		54.50%	45.90%
Opco \| Total controlling interests \| Archaea
Income Tax Examination [Line Items]
Noncontrolling interest, ownership percentage by parent	67.10%			45.90%

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.