Cash Collateral, Percentage of the aggregate amount of letters of credit outstanding

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- Definition

Debt Instrument, Transaction Support Agreement, Additional Collateral Demands

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Debt Instrument, Transaction Support Agreements, Additional Collateral Term, Free Cash Flow In Any Twelve-Month Period

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- Definition

Debt Instrument, Transaction Support Agreements, Additional Collateral Term, Sale Of Assets Benchmark

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- Definition

Debt Instrument, Transaction Support Agreements, Additional Collateral To Be Posted Per Year Through 2025

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No definition available.

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- Definition

Debt Instrument, Transaction Support Agreements, Fair Value Of Second Liens On Mining Equipment

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No definition available.

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- Definition

Debt Instrument, Transaction Support Agreements, One-Time Additional Collateral To Be Posted

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No definition available.

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- Definition

Deposit Rate, Percentage, Cash Collateral Posted

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No definition available.

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- Definition

Financial Instrument, Surety Bonds Amount

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No definition available.

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- Definition

Letters of Credit Outstanding for Reclamation

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No definition available.

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- Definition

Surety Bonds Outstanding For Reclamation

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No definition available.

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- Definition

The amount owed to the reporting entity by counterparties in securitized loan transactions.

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No definition available.

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- Definition

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

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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No definition available.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

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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- Definition

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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Financial Instruments and Other Guarantees (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jul. 01, 2022	Apr. 01, 2022	Jan. 31, 2022	Nov. 06, 2020	Apr. 03, 2017
Guarantee Obligations [Line Items]
Letters of credit outstanding, amount	$ 475.1		$ 475.1
Surety bonds amount	1,453.5		1,453.5
Asset retirement obligations	725.1		725.1
Net interest expense	37.6	$ 45.4	77.0	$ 97.8
Surety Bonds Outstanding For Reclamation	1,276.9		1,276.9
Letters of Credit Outstanding for Reclamation	346.4		346.4
Letter of Credit
Guarantee Obligations [Line Items]
Letters of credit outstanding, amount	12.3		12.3
Surety Bond
Guarantee Obligations [Line Items]
Transaction support agreements, additional collateral to be posted								$ 75.0
Transaction support agreements, additional collateral to be posted per year through 2025					$ 25.7		$ 13.0	25.0
Debt instrument, transaction support agreements, fair value of second liens on mining equipment								200.0
Transaction support agreements, additional collateral term, free cash flow in any twelve-month period								100.0
Transaction support agreements, additional collateral term, sale of assets benchmark (in excess of)								$ 10.0
Accounts Receivable Securitization Program, April 1, 2022
Guarantee Obligations [Line Items]
Line of credit facility, maximum borrowing capacity						$ 175.0			$ 250.0
Accounts Receivable Securitization Program, April 1, 2022 \| Secured debt
Guarantee Obligations [Line Items]
Outstanding borrowings	0.0		0.0
Net interest expense	0.9	$ 0.7	1.8	$ 1.4
Accounts Receivable from Securitization	13.5		13.5
Secured debt \| Accounts Receivable Securitization Program, April 1, 2022
Guarantee Obligations [Line Items]
Letters of credit outstanding, amount	161.5		$ 161.5
Secured debt \| Accounts Receivable Securitization Program, April 1, 2022 \| London Interbank Offered Rate (LIBOR) Swap Rate
Guarantee Obligations [Line Items]
Basis spread on variable rate			2.10%
Letter of Credit
Guarantee Obligations [Line Items]
Line of credit facility, maximum borrowing capacity	$ 250.0		$ 250.0
Cash Collateral, Percentage of the aggregate amount of letters of credit outstanding	103.00%		103.00%
Stated interest rate	0.75%		0.75%
Deposit Rate, Percentage, Cash Collateral Posted			0.0035
Letter of Credit \| Maximum
Guarantee Obligations [Line Items]
Transaction support agreements, additional collateral demands	$ 5.0		$ 5.0