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Debt Instrument, Capital Expenditure Threshold, Year Four

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Debt Instrument, Capital Expenditure Threshold, Year One

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Debt Instrument, Capital Expenditure Threshold, Year Three

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Debt Instrument, Capital Expenditure Threshold, Year Two

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- Definition

Debt Instrument, Collateral, Capital Stock, Percent

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Debt Instrument, Collateral, Nonvoting Capital Stock, Percent

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Debt Instrument, Collateral, Voting Capital Stock, Percent

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Debt Instrument, Covenant, Dividend Payment And Stock Purchase Payment Threshold

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Debt Instrument, Covenant, Excess Proceeds From Sales Of Assets, Threshold

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Debt Instrument, Covenant, Leverage Ratio

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Debt Instrument, Floor Interest Rate

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- Definition

Debt Instrument, Mandatory Principal Prepayment, If Required, Period Payable, Threshold

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Debt Instrument, Mandatory Principal Prepayment, Percent Of Excess Cash Flow

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- Definition

Debt Instrument, Restricted Payments Threshold

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- Definition

Interest Expense, Adequate Protection Payments

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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- Definition

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

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- Definition

Face (par) amount of debt instrument at time of issuance.

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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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Amount of the required periodic payments including both interest and principal payments.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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Long-term Debt - Narrative (Details) - USD ($)		3 Months Ended		6 Months Ended
Long-term Debt - Narrative (Details) - USD ($)	Jul. 31, 2017	Jun. 30, 2017	Apr. 01, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Interest expense, adequate protection payments			$ 29,800,000
Contractual interest expense			$ 92,900,000
Capital lease obligations		$ 79,900,000		$ 79,900,000
Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Restricted payments threshold		50,000,000		50,000,000
Successor
Debt Instrument [Line Items]
Debt issuance cost		78,400,000		78,400,000
Interest expense		41,400,000
Capital lease obligations		$ 92,400,000		$ 92,400,000
Successor \| Senior Notes \| 6.00% Senior Secured Notes due March 2022
Debt Instrument [Line Items]
Stated interest rate		6.00%		6.00%
Successor \| Senior Notes \| 6.00% Senior Secured Notes due March 2022
Debt Instrument [Line Items]
Stated interest rate		6.375%		6.375%
Successor \| Senior Notes \| 6.00% And 6.375% Senior Secured Notes, Successor Notes
Debt Instrument [Line Items]
Debt issuance cost		$ 49,500,000		$ 49,500,000
Interest expense		15,100,000
Successor \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Interest expense		25,500,000
Principal amount		950,000,000		950,000,000
Original issue discount and deferred finance costs		$ 37,300,000		$ 37,300,000
Debt instrument, term				5 years
Periodic payment				$ 2,400,000
Mandatory principal prepayment, percent of excess cash flow		75.00%		75.00%
Mandatory principal prepayment, if required, period payable, threshold				100 days
Excess proceeds from sales of assets, threshold ($10 million or greater)		$ 10,000,000		$ 10,000,000
Capital expenditure threshold 2017		220,000,000		220,000,000
Capital expenditure threshold 2018		220,000,000		220,000,000
Capital expenditure threshold 2019		250,000,000		250,000,000
Capital expenditure threshold 2020		250,000,000		250,000,000
Capital expenditure threshold 2021		$ 300,000,000		$ 300,000,000
Debt Instrument, Redemption, Period One \| Successor \| Senior Notes \| 6.00% Senior Secured Notes due March 2022
Debt Instrument [Line Items]
Redemption price, percentage				103.00%
Debt Instrument, Redemption, Period One \| Successor \| Senior Notes \| 6.00% Senior Secured Notes due March 2022
Debt Instrument [Line Items]
Redemption price, percentage				104.80%
Debt Instrument, Redemption, Period Two \| Successor \| Senior Notes \| 6.00% Senior Secured Notes due March 2022
Debt Instrument [Line Items]
Redemption price, percentage				101.50%
Debt Instrument, Redemption, Period Two \| Successor \| Senior Notes \| 6.00% Senior Secured Notes due March 2022
Debt Instrument [Line Items]
Redemption price, percentage				103.20%
Debt Instrument, Redemption, Period Three \| Successor \| Senior Notes \| 6.00% Senior Secured Notes due March 2022
Debt Instrument [Line Items]
Redemption price, percentage				101.60%
Geographic Distribution, Domestic \| Successor \| Senior Notes \| 6.00% And 6.375% Senior Secured Notes, Successor Notes
Debt Instrument [Line Items]
Collateral, capital stock, percent		100.00%		100.00%
Geographic Distribution, Foreign \| Successor \| Senior Notes \| 6.00% And 6.375% Senior Secured Notes, Successor Notes
Debt Instrument [Line Items]
Collateral, non-voting capital stock, percent		100.00%		100.00%
Collateral, voting capital stock, percent		65.00%		65.00%
Peabody Investments (Gibraltar) Limited \| Successor \| Senior Notes \| 6.00% And 6.375% Senior Secured Notes, Successor Notes
Debt Instrument [Line Items]
Collateral, non-voting capital stock, percent		100.00%		100.00%
Collateral, voting capital stock, percent		65.00%		65.00%
London Interbank Offered Rate (LIBOR) \| Successor \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate		4.50%
Floor interest rate		1.00%		1.00%
Total Leverage Ratio Less or Equal to 2.00 to 1.00 Greater Than 1.50 to 1.00 \| Successor \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Mandatory principal prepayment, percent of excess cash flow		50.00%		50.00%
Total Leverage Ratio Less or Equal to 2.00 to 1.00 Greater Than 1.50 to 1.00 \| Successor \| Maximum \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Total Leverage Ratio		2.00		2.00
Total Leverage Ratio Less or Equal to 2.00 to 1.00 Greater Than 1.50 to 1.00 \| Successor \| Minimum \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Total Leverage Ratio		1.50		1.50
Total Leverage Ratio Less or Equal to 1.50 to 1.00 Greater Than 1.00 to 1.00 \| Successor \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Mandatory principal prepayment, percent of excess cash flow		25.00%		25.00%
Total Leverage Ratio Less or Equal to 1.50 to 1.00 Greater Than 1.00 to 1.00 \| Successor \| Maximum \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Total Leverage Ratio		1.50		1.50
Total Leverage Ratio Less or Equal to 1.50 to 1.00 Greater Than 1.00 to 1.00 \| Successor \| Minimum \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Total Leverage Ratio		1.00		1.00
Total Leverage Ratio Less or Equal to 1.00 to 1.00 \| Successor \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Mandatory principal prepayment, percent of excess cash flow		0.00%		0.00%
Total Leverage Ratio		1.00		1.00
Total Leverage Ratio Less or Equal 1.25 to 1.00 \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Total Leverage Ratio		1.25		1.25
Dividend payment and stock purchase payment threshold		$ 25,000,000		$ 25,000,000
Subsequent Event \| Successor \| Term Loan \| Successor Credit Agreement
Debt Instrument [Line Items]
Payment for debt extinguishment or debt prepayment cost	$ 150,000,000