Committments and Contingent Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Loss Contingency Accrual	$ 25	$ 14
Loss Contingency Accrual, Period Increase (Decrease)	(6)	(2)
Loss Contingency, Accrual, Current	1	1
Loss Contingency, Accrual, Noncurrent	24	13
Indemnity for liabilities other than environmental	15
Indemnities for liabilities arising out of pre-closing operations	5
SEC Schedule, 12-09, Reserve, Environmental Cost [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual	25	13	$ 10
Loss Contingency Accrual, Period Increase (Decrease)	(7)	(2)
Payments for Environmental Liabilities	1	1
Hardboard Siding Reserves
Loss Contingencies [Line Items]
Loss Contingency Accrual	0	0
Environmental Reserves
Loss Contingencies [Line Items]
Loss Contingency Accrual	$ 25	$ 14