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Fixed charge coverage ratios.

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

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

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

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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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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount, after accumulated amortization, of debt premium.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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Average amount borrowed under the credit facility during the period.

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Description of the credit facility's borrowing capacity including discussion of how the borrowing capacity is determined (for example, borrowing capacity based on the amount of current assets).

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The effective interest rate during the reporting period.

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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 of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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No definition available.

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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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Debt - Narrative (Detail) - USD ($)					3 Months Ended		6 Months Ended		12 Months Ended
Debt - Narrative (Detail) - USD ($)	Apr. 28, 2021	Apr. 16, 2021	Apr. 15, 2021	Oct. 15, 2018	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	May 10, 2021
Debt Instrument [Line Items]
Amount of difference between fair value and book value					$ 182,200,000		$ 182,200,000		$ 142,900,000
Repayment of debt							444,600,000	$ 152,700,000
Loss on debt extinguishment					6,200,000	$ 400,000	6,200,000	200,000
Interest paid, net of interest capitalized					31,700,000	44,300,000	54,600,000	67,800,000
Interest income from investments/other					$ 300,000	$ 400,000	$ 700,000	$ 900,000
6.125% Senior Secured Notes Due 2026
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount	$ 400,000,000.0									$ 450,000,000.0
Debt instrument, interest rate	6.125%
Debt instrument, premium										1,100,000
Debt instrument, aggregate additional principal amount										$ 50,000,000.0
Maturity date	Nov. 01, 2026
Principal payments term							semi-annually
8.875% Debentures Due April 15, 2021
Debt Instrument [Line Items]
Debt instrument, interest rate			8.875%
Repayment of debt			$ 55,600,000
Maturity date			Apr. 15, 2021
Term Loan
Debt Instrument [Line Items]
Debt instrument, interest rate					5.09%		5.09%		5.15%
Repayment of debt					$ 387,600,000
Maturity date				Jan. 15, 2024			Jan. 15, 2024		Jan. 15, 2024
Loss on debt extinguishment					6,200,000
Term Loan \| Base Rate
Debt Instrument [Line Items]
Interest rate margin on borrowings				4.00%
Term Loan \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate margin on borrowings				5.00%
ABL Credit Facility
Debt Instrument [Line Items]
Maturity date		Apr. 16, 2026	Sep. 29, 2022
Credit facility maximum borrowing capacity		$ 650,000,000.0
Line of credit borrowing capacity description							The amount available to be borrowed under the ABL Credit Facility is equal to the lesser of (a) $650.0 million and (b) a borrowing base formula based on the amount of accounts receivable, inventory, machinery, equipment and, if we were to so elect in the future subject to the satisfaction of certain conditions, fee-owned real estate of ours and our material domestic subsidiaries, subject to certain eligibility criteria and advance rates (collectively, the “Borrowing Base”). The aggregate amount of real estate, machinery and equipment that can be included in the Borrowing Base formula is limited to $175.0 million.
Line of Credit Facility, Maximum Borrowing Base Capacity		$ 175,000,000.0
Borrowing capacity available under credit agreement					$ 462,000,000.0		$ 462,000,000.0
Weighted average interest rate on borrowings							1.50%	1.90%
Credit facility outstanding borrowing capacity							$ 30,000,000		$ 0
ABL Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Fixed charge coverage ratio		1.00%
ABL Credit Facility \| Minimum
Debt Instrument [Line Items]
Unused line fee		0.25%
ABL Credit Facility \| Maximum
Debt Instrument [Line Items]
Unused line fee		0.375%
ABL Credit Facility \| Eurocurrency
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 650,000,000.0	$ 800,000,000.0
ABL Credit Facility \| Eurocurrency \| Minimum
Debt Instrument [Line Items]
Interest rate margin on borrowings		1.25%
ABL Credit Facility \| Eurocurrency \| Maximum
Debt Instrument [Line Items]
Interest rate margin on borrowings		1.75%
ABL Credit Facility \| Base Rate \| Minimum
Debt Instrument [Line Items]
Interest rate margin on borrowings		0.25%
ABL Credit Facility \| Base Rate \| Maximum
Debt Instrument [Line Items]
Interest rate margin on borrowings		0.75%