Derivative Instruments - Balance Sheet Classification (Details) € in Millions, $ / BTU in Millions, $ in Millions, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($) $ / BTU	Mar. 31, 2023 USD ($) $ / BTU	Dec. 31, 2023 USD ($) $ / BTU	Mar. 31, 2024 EUR (€)	Mar. 31, 2024 MXN ($)	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 MXN ($)	Mar. 31, 2023 EUR (€)	Mar. 31, 2023 MXN ($)
Derivatives, Fair Value
Total asset derivatives	$ 10	$ 15	$ 13
Total liability derivatives	157	175	190
Current derivative asset	10	15	13
Current derivative liability	17	36	17
Noncurrent derivative liability	140	139	173
Derivatives designated as hedging instruments
Derivatives, Fair Value
Total asset derivatives	9	7	8
Total liability derivatives	$ 148	$ 173	$ 181
Derivatives designated as hedging instruments | Commodity forward contracts and collars
Derivatives, Fair Value
British Thermal Units ("BTUs") | $ / BTU	35	49	38
Total liability derivatives	$ 15	$ 20	$ 14
Derivatives designated as hedging instruments | Foreign exchange risk
Derivatives, Fair Value
Notional amount	833	844	833
Total asset derivatives	6	5	4
Total liability derivatives	92	78	111
Derivatives designated as hedging instruments | Interest rate swaps - fair value hedges
Derivatives, Fair Value
Notional amount | €				€ 0		€ 0		€ 725
Total liability derivatives		39
Derivatives designated as hedging instruments | Cash flow hedges of foreign exchange risk
Derivatives, Fair Value
Notional amount					$ 0		$ 0		$ 710
Total liability derivatives		2
Derivatives designated as hedging instruments | Net investment hedges
Derivatives, Fair Value
Notional amount | €				€ 483		€ 483		€ 358
Total asset derivatives	3	2	4
Total liability derivatives	41	34	56
Derivatives not designated as hedging instruments | Foreign exchange contracts
Derivatives, Fair Value
Notional amount	453	420	407
Total asset derivatives	1	8	5
Total liability derivatives	$ 9	$ 2	$ 9