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Product Warranty (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Beginning Balance	$ 13.0	$ 29.0	$ 14.0	$ 25.0
Accrued to expense	1.0	0.0	1.0	1.0
Reduced to Other Operating Charges and Credits	(4.0)	0.0	(4.0)	0.0
Foreign Currency Translation	(0.0)	(1.0)	(0.0)	(0.0)
Payments made	0.0	(6.0)	(1.0)	(7.0)
Total warranty reserves	9.0	23.0	9.0	23.0
Current portion of warranty reserves	(2.0)	(4.0)	(2.0)	(4.0)
Long-term portion of warranty reserves	7.0	19.0	$ 7.0	19.0
Composite decking products [Member]
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Accrued to discontinued operations	$ 0.0	$ 0.0		$ 5.0

X

- Definition

Standard Product Warranty Accrual, Other Operating Charges and Credits

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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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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer) for estimated claims under standard and extended warranty protection rights granted to customers.

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Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty.

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Amount of increase (decrease) in the standard and extended product warranty accrual from changes in estimates attributable to preexisting product warranties.

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Amount of increase in the standard and extended product warranty accrual from warranties issued.

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Amount of foreign currency translation gain (loss) which decreases (increases) the standard and extended product warranty accrual.

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