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Contingencies and Commitments (Details) - Pending litigation $ in Millions		1 Months Ended
	Dec. 13, 2016 AUD ($) claim	Mar. 31, 2023 referee	Sep. 30, 2025 USD ($)	Dec. 13, 2016 USD ($) claim
Santos Ltd
Loss Contingencies [Line Items]
Damages sought	$ 1,470
Number of referees appointed | referee		3
Estimate of possible loss	$ 236
Loss contingency receivable			$ 653,000,000	$ 665,000,000
Santos Ltd Claim 1
Loss Contingencies [Line Items]
Number of claims | claim	1			1
Panel referred damages awarded from other party	$ 700
Santos Ltd Claim 2
Loss Contingencies [Line Items]
Panel referred damages awarded from other party	$ 790

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