Derivative Instruments - Balance Sheet Classification (Details) € in Millions, $ / BTU in Millions, $ in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($) $ / BTU	Jun. 30, 2022 EUR (€)	Jun. 30, 2022 MXN ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 EUR (€)	Jun. 30, 2021 USD ($)	Jun. 30, 2021 EUR (€)
Derivatives, Fair Value
Total asset derivatives	$ 37			$ 19		$ 20
Total liability derivatives	37			44		118
Current derivative asset	14			14		13
Current derivative liability	12			2		3
Noncurrent derivative asset	23			5		7
Noncurrent derivative liability	$ 25			42		115
Commodity forward contracts
Derivatives, Fair Value
British Thermal Units ("BTUs") | $ / BTU	44
Derivatives designated as hedging instruments
Derivatives, Fair Value
Total asset derivatives	$ 35			18		19
Total liability derivatives	37			42		116
Derivatives designated as hedging instruments | Commodity forward contracts and collars
Derivatives, Fair Value
Total asset derivatives	2
Total liability derivatives	6
Derivatives designated as hedging instruments | Foreign exchange risk
Derivatives, Fair Value
Total asset derivatives	17			9
Total liability derivatives	2
Derivatives designated as hedging instruments | Interest rate swaps - fair value hedges
Derivatives, Fair Value
Notional amount | €		€ 725			€ 725		€ 725
Total asset derivatives				4		11
Total liability derivatives	28			2		1
Derivatives designated as hedging instruments | Cash flow hedges of foreign exchange risk
Derivatives, Fair Value
Notional amount			$ 514	422		878
Total asset derivatives				2		6
Total liability derivatives	1			23		75
Derivatives designated as hedging instruments | Net investment hedges
Derivatives, Fair Value
Notional amount | €		324			311		€ 311
Total asset derivatives	16			3		2
Total liability derivatives				17		40
Derivatives not designated as hedging instruments | Foreign exchange contracts
Derivatives, Fair Value
Notional amount	334			202		305
Total asset derivatives	$ 2			1		1
Total liability derivatives				$ 2		$ 2
Fair Value Hedges | Derivatives designated as hedging instruments | Foreign exchange risk
Derivatives, Fair Value
Notional amount | €		€ 850			€ 400