Number of closed mills where the lease was terminated.

No definition available.

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- Definition

Number of paper mills being idled indefinitely.

+ References

No definition available.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

+ References

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Restructuring and Other Items, net (Details) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
Restructuring and Other Items, net (Details) $ in Millions	Oct. 03, 2021 USD ($)	Sep. 27, 2020 USD ($)	Jun. 28, 2020 USD ($) Mill	Jun. 28, 2020 Mill	Oct. 03, 2021 USD ($)	Sep. 27, 2020 USD ($)
Restructuring Charges [Abstract]
Asset write-downs	$ 0.7	$ 1.1			$ 0.7	$ 7.1
Severance and other related costs	0.4	0.3			0.4	0.6
Total restructuring and other items, net	1.1	1.5			1.1	8.0
Restructuring Liability [Roll Forward]
Restructuring liability, beginning of period					3.6
Additional provision					0.1
Cash payments					(1.3)
Restructuring liability, end of period	2.4				2.4
Paper PCC [Member]
Restructuring and Other Items, Net [Abstract]
Number of mills with lease terminations \| Mill			1	1
Specialty Minerals [Member]
Restructuring Charges [Abstract]
Asset write-downs	0.7	1.1			0.7	7.1
Severance and other related costs	0.4	0.3			0.4	0.6
Specialty Minerals [Member] \| Paper PCC [Member]
Restructuring Charges [Abstract]
Asset write-downs	0.7	1.1	$ 6.0
Severance and other related costs	0.4		$ 0.3
Corporate [Member]
Restructuring Charges [Abstract]
Other	$ 0.0	$ 0.1			$ 0.0	$ 0.3
Verso Papers [Member]
Restructuring and Other Items, Net [Abstract]
Number of paper mills being idled indefinitely \| Mill			2	2