Acquisitions and Dispositions - Acquisition of property, plant and equipment (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
PP&E acquired but not yet paid	$ 139	$ 204	$ 204	$ 392
Discontinued Operations, Disposed of by Sale
Schedule of Equity Method Investments [Line Items]
PP&E acquired but not yet paid	$ 17	$ 21