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Common Stock, Dividends, Per Share, Variable Cash

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Amount of stock repurchase plan authorized.

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Debt and Equity - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		1 Months Ended			3 Months Ended		9 Months Ended		11 Months Ended
	Sep. 21, 2022	Oct. 31, 2022	May 31, 2022	Apr. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Nov. 04, 2022	Jul. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Long-term debt					$ 10,690		$ 10,690		$ 10,690				$ 9,450
Repayments of debt							4,073	$ 672
Net gain on early extinguishment of debt					(20)	$ 0	(28)	0
Interest costs					182	$ 157	$ 524	$ 482
Stock repurchase program, authorized amount											$ 5,000	$ 3,000
Treasury stock purchases (in shares)							35.1		47.9
Shares repurchased							$ 1,300		$ 1,800
Cost per share repurchased (in dollars per share)							$ 38.36		$ 38.35
Remaining authorized shares repurchase amount					$ 3,200		$ 3,200		$ 3,200
Dividends declared per share of common stock (in dollars per share)	$ 0.15				$ 0.15	$ 0.075	$ 0.45	$ 0.225
Base cash dividend (in dollars per share)	0.075
Variable cash dividend (in dollars per share)	$ 0.075
Unsecured Credit Facility \| PT-FI
Debt Instrument [Line Items]
Letter of credit					$ 0		$ 0		0
Debt instrument, term				5 years
Increase in line of credit				$ 1,300
Net gain on early extinguishment of debt				10
Unsecured Credit Facility \| Cerro Verde
Debt Instrument [Line Items]
Letter of credit					0		0		0
Line of credit facility, maximum borrowing capacity			$ 350
Debt instrument, term			5 years
Property, Plant and Equipment
Debt Instrument [Line Items]
Interest costs capitalized					42	$ 19	101	$ 51
Line of Credit \| Cerro Verde
Debt Instrument [Line Items]
Long-term debt					0		0		0				325
Line of Credit \| Letter of Credit
Debt Instrument [Line Items]
Letter of credit					8		8		8
Line of Credit \| Letter of Credit \| Subsequent event
Debt Instrument [Line Items]
Revolving credit facility, availability		$ 1,500
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt					0		0		0
Line of Credit \| Revolving Credit Facility \| October 2022 Unsecured Revolving Credit Facility \| Subsequent event
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 3,000
Debt instrument, term		5 years
Line of Credit \| Revolving Credit Facility \| PT-FI \| October 2022 Unsecured Revolving Credit Facility \| Subsequent event
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 500
Senior Notes
Debt Instrument [Line Items]
Principal Amount					984		984		984
Net gain on early extinguishment of debt					(20)		(38)
Senior Notes \| Subsequent event
Debt Instrument [Line Items]
Principal Amount										$ 78
Senior Notes \| PT-FI
Debt Instrument [Line Items]
Long-term debt					$ 2,976		$ 2,976		$ 2,976				$ 0
Principal Amount				3,000
Repayments of debt				600
Senior Notes \| PT-FI \| 4.763% Senior Notes Due 2027
Debt Instrument [Line Items]
Principal Amount				750
Senior Notes \| PT-FI \| 5.315% Senior Notes Due 2032
Debt Instrument [Line Items]
Principal Amount				1,500
Senior Notes \| PT-FI \| 6.200% Senior Notes Due 2052
Debt Instrument [Line Items]
Principal Amount				$ 750