Property Acquisitions (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) a Boe	Mar. 31, 2021 USD ($) a Boe	Dec. 31, 2020 USD ($)
Permian Basin
Asset Acquisition [Line Items]
Costs Incurred, Acquisition of Oil and Gas Properties	$ 200.0
Escrow deposit per PSA	20.0
Additional funds at closing per PSA	177.0
Powder River Basin
Asset Acquisition [Line Items]
Costs Incurred, Acquisition of Oil and Gas Properties	403.0	$ 206.6
Asset acquisition total purchase price	$ 450.0
Oil and Gas, Undeveloped Acreage, Net | a	172,000	130,000
Daily production of acquired producing properties | Boe	18,000	7,200
Amount of Asset Retirement Obligations associated with acquired properties	$ 15.3	$ 4.9
Asset acquisition amount of assumed production and ad valorem tax payment obligations	31.3
Amount of right of use assets acquired in property acquisition	$ 10.1	8.2
Escrow deposit per PSA			$ 21.5
Additional funds at closing per PSA		$ 185.1