Commitments and Contingencies - Narrative (Details) $ in Millions			1 Months Ended
	Aug. 23, 2019 AUD ($)	Dec. 13, 2016 AUD ($) referee	Oct. 31, 2022 USD ($)	Sep. 30, 2018 action	Mar. 31, 2023 USD ($)	Aug. 31, 2019 USD ($)	Aug. 23, 2019 USD ($)	Aug. 12, 2016 USD ($)
Loss Contingencies [Line Items]
Number of actions filed | action				11
Santos Ltd. | Pending Litigation
Loss Contingencies [Line Items]
Damages sought		$ 1,470
Estimate of possible loss		$ 236
Loss Contingency, Trial or Alternative Dispute Resolution, Number of Referees Apointed | referee		3
Loss Contingency, Panel Referred Damages Awarded from Other Party, Value		$ 700
Sadara Chemical Company | Pending Litigation
Loss Contingencies [Line Items]
Damages sought	$ 100
Estimate of possible loss							$ 574,000,000
Fluor/TECHINT | Pending Litigation
Loss Contingencies [Line Items]
Estimate of possible loss					$ 364,000,000			$ 250,000,000
North Texas Tollway Authority | Pending Litigation
Loss Contingencies [Line Items]
Damages sought			$ 100,000,000
Barrick | Fluor/TECHINT
Loss Contingencies [Line Items]
Letters of credit outstanding, amount						$ 36,000,000
Parent Company | Barrick | Fluor/TECHINT
Loss Contingencies [Line Items]
Letters of credit outstanding, amount						24,000,000
Partnership Interest | Barrick | Fluor/TECHINT
Loss Contingencies [Line Items]
Letters of credit outstanding, amount						$ 12,000,000