Proposed consent decree, value of labor performed

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- Definition

Proposed consent decree, value of remediation payments

+ References

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Responsible party percentage

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Undiscounted amount of the accrual for environmental loss contingencies.

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- Definition

Carrying amount as of the balance sheet date of reserves for the costs of settling insured claims and costs incurred in the claims settlement process attributable to asbestos and environmental claims, net of estimated reinsurance recoveries.

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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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Amount of damages awarded to the plaintiff in the legal matter.

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The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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COMMITMENTS AND CONTINGENCIES Environmental Remediation Obligations (Details) - USD ($) $ in Millions	6 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2021	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2020
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 185.0
Accrual for environmental loss contingencies, gross	194.0
Liability for Asbestos and Environmental Claims, Net	112.0
Cass Lake, Minnesota
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	46.0
Kalamazoo River Superfund Site
Loss Contingencies [Line Items]
Proposed consent decree, value of remediation payments				$ 100.0
Proposed consent decree, value of labor performed				$ 135.7
Kalamazoo River Superfund Site \| Time Critical Removal Action
Loss Contingencies [Line Items]
Loss contingency, damages sought, value		$ 19.0	$ 37.0
Kalamazoo River Superfund Site \| Georgia-Pacific Consumer Products LP, Fort James Corporation and Georgia Pacific LLC Cost Recovery Action
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 79.0
Responsible party percentage	15.00%
Loss Contingency, damages awarded, value	$ 50.0
San Jacinto River Superfund Site
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 115.0
Responsible party percentage	50.00%
San Jacinto River Superfund Site \| Northern impoundment [Member]
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 105.0
Liability for Asbestos and Environmental Claims, Net	55.0
San Jacinto River Superfund Site \| Southern Impoundment [Member]
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	10.0
Liability for Asbestos and Environmental Claims, Net	$ 10.0