Commitments and Contingencies - Loss Contingencies (Details) R$ in Millions		6 Months Ended
	Mar. 29, 2018 USD ($) company	Jun. 30, 2019 BRL (R$) defendant party	Jun. 30, 2019 USD ($) defendant affiliate_corporations party entity facility number_of_companies	Dec. 31, 2018 USD ($)	Aug. 22, 2017 party	Dec. 31, 2013 company	Nov. 13, 2007 entity
Fox River
Loss Contingencies [Line Items]
Number of potentially responsible parties | entity			8				8
Number of previously owned carbonless copy paper manufacturing facilities | facility			2
Threshold amount for environmental cleanup costs			$ 75,000,000
Percentage of funding obligation under cost sharing agreement			50.00%
Percentage of obligation under cost sharing agreement			60.00%
Receivable under funding agreement			$ 46,000,000	$ 45,000,000
Number of defendants | defendant		2	2
Number of parties | party		2	2
Gross loss contingency accrual			$ 14,000,000	21,000,000
Net loss contingency accrual			11,000,000	17,000,000
Total amount received from settlements with insurance carriers			$ 202,000,000
Kalamazoo River
Loss Contingencies [Line Items]
Loss contingency, value of damages sought	$ 105,000,000
Number of additional companies receiving general notice letters | number_of_companies			3
Number of additional defendants | defendant			2
Number of total corporation plaintiffs | affiliate_corporations			3
Number of companies tried to the court | company						4
Costs incurred in the pasted related to loss contingency	50,000,000
Loss contingency, value of damages sought	$ 55,000,000
NCR share of costs related to loss contingency	40.00%
GP share of costs related to loss contingency	40.00%
Number of companies assigned to share costs of loss contingency | company	2
Loss contingency accrual			$ 46,000,000	47,000,000
Fox River LLC | Fox River
Loss Contingencies [Line Items]
Funding remainder			$ 0	$ 0
Glatfelter | Fox River
Loss Contingencies [Line Items]
Number of parties that appealed | party					1
Company One | Kalamazoo River
Loss Contingencies [Line Items]
NCR share of costs related to loss contingency	15.00%
Company Two | Kalamazoo River
Loss Contingencies [Line Items]
NCR share of costs related to loss contingency	5.00%
Fox River
Loss Contingencies [Line Items]
Percentage of portion of costs below threshold			45.00%
Percentage of portion of costs exceeding threshold			40.00%
Minimum | Fox River | General Contractor Arbitration [Member]
Loss Contingencies [Line Items]
Loss contingency, range of possible loss			$ 46,000,000
Percentage of Company's award responsibility to indemnitors and co-obligators			25.00%
Maximum | Fox River | General Contractor Arbitration [Member]
Loss Contingencies [Line Items]
Loss contingency, range of possible loss			$ 53,000,000
Foreign Tax Authority
Loss Contingencies [Line Items]
Loss contingency, value of damages sought		R$ 168	44,000,000
Foreign Tax Authority | Minimum
Loss Contingencies [Line Items]
Loss contingency, range of possible loss			0
Foreign Tax Authority | Maximum
Loss Contingencies [Line Items]
Loss contingency, range of possible loss			$ 0