SUMMARY OF BUSINESS AND BASIS OF PRESENTATION (Tables)

12 Months Ended

Dec. 31, 2019

The following table presents the revenue disaggregated by product included in Net Sales on the Consolidated Statements of Operations:



	Year Ended December 31,
(Dollars in millions)	2018		2019
Paper	$	2,476	$	2,224
Packaging	67		103
Pulp	139		117
Total Net sales	$	2,682	$	2,444

The following table presents the revenue disaggregated by sales channel included in Net Sales on the Consolidated Statements of Operations:



	Year Ended December 31,
(Dollars in millions)	2018		2019
End-users and Converters	$	1,091	$	1,119
Brokers and Merchants	1,172		936
Printers	419		389
Total Net sales	$	2,682	$	2,444

Schedule of Estimated Useful Lives of Property, Plant, and Equipment

Estimated useful lives are as follows:



(Years)
Buildings and building improvements		20 - 40
Land improvements		10 - 20
Machinery and equipment		3 - 20
Furniture and office equipment		10
Computer hardware and software		3 - 7
Leasehold improvements		Over the shorter of the lease term or the useful life of the improvements

Schedule of Asset Retirement Obligations Included in Other Liabilities

The following table presents activity related to asset retirement obligations for the periods presented. Long-term obligations are included in Other long-term liabilities and current portions are included in Accrued and other liabilities on the Consolidated Balance Sheets:



	Year Ended December 31,
(Dollars in millions)	2018			2019
Asset retirement obligations, beginning balance	$	15		$	14
Settlement of existing liabilities	(1		)	—
Accretion expense	1			2
Adjustments to existing liabilities	(1		)	—
Asset retirement obligations, ending balance	14			16
Less: Current portion	(1		)	(1		)
Non-current portion of asset retirement obligations, ending balance	$	13		$	15

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table summarizes the changes in Accumulated other comprehensive income (loss) by balance type for the years ended December 31, 2017, 2018 and 2019:



(Dollars in millions)
Accumulated other comprehensive loss as of December 31, 2016	$	127
Pension and other postretirement adjustment, net	5
Net increase in other comprehensive income	5
Accumulated other comprehensive income as of December 31, 2017	132
Pension and other postretirement adjustment, net	(19		)
Reclassification of stranded tax effects (ASU 2018-02)	7
Net decrease in other comprehensive income	(12		)
Accumulated other comprehensive income as of December 31, 2018	120
Pension and other postretirement adjustment, net	2
Net increase in other comprehensive income	2
Accumulated other comprehensive income as of December 31, 2019	$	122