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Commitments and Contingencies Loss Contingencies (Details) R$ in Millions, $ in Millions |  | 12 Months Ended
--- | --- | ---
Mar. 29, 2018 USD ($) | Dec. 31, 2019 USD ($) defendant affiliate_corporations entity facility number_of_companies | Dec. 31, 2018 BRL (R$) | Dec. 31, 2018 USD ($)
Fox River Site [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Portion Of Costs Below Threshold, Percentage |  | 45.00% |  |
Portion Of Costs Exceeding Threshold, Percentage |  | 40.00% |  |
Fox River Site [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of Potentially Responsible Parties | entity |  | 8 |  |
Number of Previously Owned Carbonless Copy Paper Manufacturing Facilities | facility |  | 2 |  |
Threshold For Environmental Cleanup Costs |  | $ 75 |  |
BAT And API Funding Obligation Under The Cost Sharing Agreement |  | 50.00% |  |
BAT And API Obligation Under The Cost Sharing Agreement |  | 60.00% |  |
Receivable under Funding Agreement |  | $ 53 |  | $ 45
Gross Loss Contingency Accrual |  | 5 |  | 21
Net Loss Contingency Accrual |  | 16 |  | 17
Total Amount Received from Settlements with Insurance Carriers |  | 202 |  |
General Contractor Arbitration [Member] | Fox River Site [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Estimate of Possible Loss |  | 10 |  |
General Contractor Arbitration [Member] | Fox River Site [Member] | Minimum [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Estimate of Possible Loss |  | 46 |  |
General Contractor Arbitration [Member] | Fox River Site [Member] | Maximum [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Estimate of Possible Loss |  | 53 |  |
Kalamazoo River Site [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Damages Sought, Value Removed by Court | $ 55 |  |  |
Loss Contingency, Damages Sought, Value | $ 105 |  |  |
Net Loss Contingency Accrual |  | $ 81 |  |
Additional Companies Receiving General Notice Letters | number_of_companies |  | 3 |  |
Total Additional Defendants | defendant |  | 2 |  |
Total Corporation Plaintiffs | affiliate_corporations |  | 3 |  |
Total Past Costs Being Tried |  | $ 50 |  |
Loss Contingency Accrual |  |  |  | 47
Ebina [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency Accrual |  | 19 |  | 2
Fox River LLC [Member] | Fox River Site [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Funding Remainder Other Current Asset |  | 0 |  | 0
BCG Matter [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Damages Sought, Value |  | $ 80 |  |
Foreign Tax Authority [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Damages Sought, Value |  |  | R$ 168 | $ 43

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