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Derivative Instruments - Balance Sheet Classification (Details) € in Millions, $ / BTU in Millions, $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($) $ / BTU	Sep. 30, 2023 USD ($) $ / BTU	Dec. 31, 2023 USD ($) $ / BTU	Sep. 30, 2024 EUR (€)	Dec. 31, 2023 EUR (€)	Sep. 30, 2023 EUR (€)
Derivatives, Fair Value
Total asset derivatives	$ 17	$ 14	$ 13
Total liability derivatives	188	129	190
Current derivative asset	17	14	13
Current derivative liability	12	21	17
Noncurrent derivative liability	176	108	173
Derivatives designated as hedging instruments
Derivatives, Fair Value
Total asset derivatives	6	11	8
Total liability derivatives	$ 185	$ 115	$ 181
Derivatives designated as hedging instruments \| Commodity forward contracts and collars
Derivatives, Fair Value
British Thermal Units ("BTUs") \| $ / BTU	30	40	38
Total liability derivatives	$ 10	$ 13	$ 14
Derivatives designated as hedging instruments \| Foreign exchange risk
Derivatives, Fair Value
Notional amount	833	844	833
Total asset derivatives	4	7	4
Total liability derivatives	118	72	111
Derivatives designated as hedging instruments \| Net investment hedges
Derivatives, Fair Value
Notional amount \| €				€ 483	€ 483	€ 483
Total asset derivatives	2	4	4
Total liability derivatives	57	30	56
Derivatives not designated as hedging instruments \| Foreign exchange contracts
Derivatives, Fair Value
Notional amount	628	493	407
Total asset derivatives	11	3	5
Total liability derivatives	$ 3	$ 14	$ 9