Financial Instruments (Unsettled Derivatives) (Details) oz in Thousands, lb in Millions, $ in Millions		3 Months Ended
Mar. 31, 2022 USD ($) oz lb $ / oz $ / lb $ / lb	Mar. 31, 2022 USD ($) $ / oz $ / lb $ / lb	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 195	$ 195		$ 77
Derivative Liability, Fair Value, Gross Liability	22	22		28
Derivative Asset, Fair Value, Gross Liability	4	4		4
Derivative Liability, Fair Value, Gross Asset	4	4		4
Derivative Asset	191	191		73
Derivative Liability	18	18		24
Trade accounts receivable [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	165	165		51
Derivative Liability	8	8		14
Accounts Payable and Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Asset	2	2		10
Derivative Liability	10	10		10
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	23	23		12
Derivative Liability	0	0		0
Other Assets
Derivatives, Fair Value [Line Items]
Derivative Asset	1	1		0
Derivative Liability	0	0		0
Commodity Contract
Derivatives, Fair Value [Line Items]
Matured derivative financial instruments		14	$ 24
Derivative Asset, Fair Value, Gross Asset	26	26		13
Derivative Liability, Fair Value, Gross Liability	2	2		1
Derivative Asset, Fair Value, Gross Liability	2	2		1
Derivative Liability, Fair Value, Gross Asset	2	2		1
Derivative Asset	24	24		12
Derivative Liability	0	0		0
Embedded Derivative Financial Instruments
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	169	169		64
Derivative Liability, Fair Value, Gross Liability	20	20		27
Derivative Asset, Fair Value, Gross Liability	2	2		3
Derivative Liability, Fair Value, Gross Asset	2	2		3
Derivative Asset	167	167		61
Derivative Liability	18	18		24
Designated as Hedging Instrument [Member] \| Commodity Contract
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 24	$ 24		12
Derivative, Nonmonetary Notional Amount, Mass \| lb	84
Derivative, Average Forward Price \| $ / lb	4.47	4.47
Not Designated as Hedging Instrument [Member] \| Embedded Derivative Financial Instruments
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 169	$ 169		64
Derivative Liability, Fair Value, Gross Liability	$ 20	$ 20		27
Not Designated as Hedging Instrument [Member] \| Forward Contracts
Derivatives, Fair Value [Line Items]
Derivative, Nonmonetary Notional Amount, Mass \| lb	4
Derivative, Average Forward Price \| $ / lb	4.60	4.60
Commodity Contract \| Not Designated as Hedging Instrument [Member] \| Forward Contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 2	$ 2		1
Derivative Liability, Fair Value, Gross Liability	$ 2	$ 2		$ 1
Copper \| Short [Member] \| Not Designated as Hedging Instrument [Member] \| Embedded Derivative Financial Instruments
Derivatives, Fair Value [Line Items]
Derivative Average Market Price \| $ / lb	4.71	4.71
Derivative, Nonmonetary Notional Amount, Mass \| lb	753
Derivative, Average Forward Price \| $ / lb	4.49	4.49
Copper \| Long [Member] \| Not Designated as Hedging Instrument [Member] \| Embedded Derivative Financial Instruments
Derivatives, Fair Value [Line Items]
Derivative Average Market Price \| $ / lb	4.71	4.71
Derivative, Nonmonetary Notional Amount, Mass \| lb	65
Derivative, Average Forward Price \| $ / lb	4.43	4.43
Gold \| Short [Member] \| Not Designated as Hedging Instrument [Member] \| Embedded Derivative Financial Instruments
Derivatives, Fair Value [Line Items]
Derivative Average Market Price \| $ / oz	1,936	1,936
Derivative, Nonmonetary Notional Amount, Mass \| oz	206
Derivative, Average Forward Price \| $ / oz	1,925	1,925
Sales [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net		$ 240	179
Sales [Member] \| Copper \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net		218	207
Sales [Member] \| gold and other \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net		22	(28)
Cost of Sales [Member] \| Not Designated as Hedging Instrument [Member] \| Forward Contracts
Derivatives, Fair Value [Line Items]
Matured derivative financial instruments		$ 4	$ (8)

The average market price for a group of price risk forward or futures contracts, such as gas futures contracts.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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The average forward price on the group of price risk forward or futures contracts, such as gas futures contracts.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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Nominal mass used to calculate payments on a derivative instrument.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

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