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Acquisitions and Dispositions - Narrative (Details) $ in Millions, $ in Millions	1 Months Ended		3 Months Ended
	Jul. 31, 2023 CAD ($) $ / bbl	Jul. 31, 2023 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023	Jul. 31, 2023 USD ($) $ / bbl	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022
Subsequent Event | Surmont | Forecast
Asset Acquisition [Line Items]
Ownership percentage				100.00%
Surmont | Subsequent Event
Asset Acquisition [Line Items]
Percentage of interest acquired	50.00%				50.00%
Consideration transferred	$ 4,000.0	$ 3,000.0
Business acquisition, contingent payment term	5 years	5 years
Business acquisition, maximum payment	$ 440.0				$ 325.0
Business acquisition, cost per every dollar exceeding threshold	$ 2.7	$ 2.0
Business acquisition, threshold | $ / bbl	52				52
QG12
Asset Acquisition [Line Items]
Equity method investment, ownership percentage						25.00%		25.00%
North Field South | QG12
Asset Acquisition [Line Items]
Ownership percentage						25.00%
PALNG
Asset Acquisition [Line Items]
Equity method investment, ownership percentage							30.00%
PALNG | Sempra
Asset Acquisition [Line Items]
Ownership percentage							70.00%
APLNG
Asset Acquisition [Line Items]
Equity method investment, ownership percentage						47.50%
APLNG | Forecast
Asset Acquisition [Line Items]
Equity method investment, ownership percentage			49.99%
Payments to acquire equity method investments | $			$ 500.0
Additional ownership percentage in equity investment acquired			2.49%

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