Summary of Significant Accounting Policies and New Accounting Pronouncements - Property, Plant, Equipment and Depreciation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Depreciation expense, cost of sales	$ 137	$ 135	$ 93
Minimum
Property, Plant and Equipment [Line Items]
Capitalized shutdown costs, amortization period	1 year
Maximum
Property, Plant and Equipment [Line Items]
Capitalized shutdown costs, amortization period	18 months
Other current assets
Property, Plant and Equipment [Line Items]
Capitalized shutdown costs	$ 19	$ 12
Forest Products Group Production Related Plant and Equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Forest Products Group Production Related Plant and Equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful life	20 years
Non-production Assets | Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Non-production Assets | Maximum
Property, Plant and Equipment [Line Items]
Useful life	25 years
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Useful life	15 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Useful life	35 years
Land Improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful life	5 years
Land Improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful life	30 years