Legal Proceedings	12 Months Ended
Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings	COMMITMENTS AND CONTINGENCIES The Company is involved in a number of lawsuits incidental to its business, including environmental-related litigation and routine litigation arising in the ordinary course of business. Although it is difficult to predict the ultimate outcome of these cases, the Company believes, except as discussed below, that any ultimate liability would not have a material adverse effect on the Company’s consolidated financial condition or results of operations. Environmental Matters The Company is a potentially responsible party ("PRP") pursuant to the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (commonly known as “Superfund”) and similar state and foreign laws in proceedings associated with 12 sites around the United States and one in Brazil. These proceedings were instituted by the United States Environmental Protection Agency and certain state and foreign environmental agencies at various times beginning in 1983. Superfund and similar state and foreign laws create liability for investigation and remediation in response to releases of hazardous substances in the environment. Under these statutes, joint and several liability may be imposed on waste generators, site owners and operators, and others regardless of fault. Although these regulations could require the Company to remove or mitigate the effects on the environment at various sites, perform remediation work at such sites, or pay damages for loss of use and non-use values, the Company expects its liability in these proceedings to be limited to monetary damages. The Company expects its future liability relative to these sites to be insignificant, individually and in the aggregate. The Company is involved in other environmental-related litigation arising in the ordinary course of business. The Company accrues environmental costs when it is probable that these costs will be incurred and can be reasonably estimated. The Company's reserve for environmental liabilities at December 31, 2018 and 2017 was $0.3 million and $0.9 million, respectively, and is included in other liabilities and deferred credits on the accompanying consolidated balance sheet. Brazil Tax Dispute - Goodwill Amortization During October 2013, Dixie Toga, Ltda ("Dixie Toga"), a Bemis subsidiary, received an income tax assessment in Brazil for the tax years 2009 through 2011 that relates to the amortization of certain goodwill generated from the acquisition of Dixie Toga. The income tax assessed for those years is approximately $9.8 million, translated to U.S. dollars at the December 31, 2018 exchange rate. The Company expects that tax examinations for years after 2011 will include similar assessments as the Company continues to claim the tax benefits associated with the goodwill amortization. An ultimate adverse resolution on these assessments, including interest and penalties, could be material to the Company's consolidated results of operations and/or cash flows. The Company has been advised by its legal and tax advisors that its position with respect to the deductions is allowable under the tax laws of Brazil. The Company is contesting the disallowance and believes it is more likely than not the tax benefit will be sustained in its entirety and consequently has not recorded a liability. In May of 2017, the Company received a favorable administrative decision. The government is appealing this decision to the next administrative level. The Company intends to litigate the matter if it is not resolved at the administrative appeals levels. The ultimate outcome could take several years. At this time, the Company believes that final resolution of the assessment will not have a material impact on the Company's consolidated financial statements. Brazil Tax Credits During October 2018, Bemis Do Brasil Industria E Comercio De Embalagens Ltda. (“Bemis Brazil”), a Bemis subsidiary, received a final decision from the Brazilian court regarding our claim that certain indirect taxes were incorrectly required to be paid in the years 2001 through 2017. As a result of this case, Bemis Brazil expects to receive tax credits for the overpaid tax and related interest that can be used to offset various Brazilian federal taxes in future years. The exact methodology to compute the amount of the tax credit is still being determined by the tax authorities. In the fourth quarter of 2018, Bemis Brazil hired an outside consultant to compile documentation required to claim the credit. Bemis Brazil has estimated that it is probable to receive a benefit, net of fees and applicable Brazilian taxes, of $10.1 million (translated into U.S. dollars as of December 31, 2018) for the years 2009-2017. We reflected the $10.1 million benefit by recording $15.3 million on the consolidated statement of income in other operating income offset by $5.2 million of income tax included within income taxes provision (benefit). Bemis Brazil has not completed the estimation of tax credits for the years 2001 through 2008 given the need to gather and review manual records from this time period. The completion of this estimate is expected in 2019 and will result in recording further benefits. In addition, a taxpayer favorable decision on the methodology to compute the tax credits may result in significantly more tax credits, subject to some limitations, being available to Bemis Brazil.

COMMITMENTS AND CONTINGENCIES

The Company is involved in a number of lawsuits incidental to its business, including environmental-related litigation and routine litigation arising in the ordinary course of business. Although it is difficult to predict the ultimate outcome of these cases, the Company believes, except as discussed below, that any ultimate liability would not have a material adverse effect on the Company’s consolidated financial condition or results of operations.

Environmental Matters

The Company is a potentially responsible party ("PRP") pursuant to the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (commonly known as “Superfund”) and similar state and foreign laws in proceedings associated with 12 sites around the United States and one in Brazil. These proceedings were instituted by the United States Environmental Protection Agency and certain state and foreign environmental agencies at various times beginning in 1983. Superfund and similar state and foreign laws create liability for investigation and remediation in response to releases of hazardous substances in the environment. Under these statutes, joint and several liability may be imposed on waste generators, site owners and operators, and others regardless of fault. Although these regulations could require the Company to remove or mitigate the effects on the environment at various sites, perform remediation work at such sites, or pay damages for loss of use and non-use values, the Company expects its liability in these proceedings to be limited to monetary damages. The Company expects its future liability relative to these sites to be insignificant, individually and in the aggregate.

The Company is involved in other environmental-related litigation arising in the ordinary course of business. The Company accrues environmental costs when it is probable that these costs will be incurred and can be reasonably estimated. The Company's reserve for environmental liabilities at December 31, 2018 and 2017 was $0.3 million and $0.9 million, respectively, and is included in other liabilities and deferred credits on the accompanying consolidated balance sheet.

Brazil Tax Dispute - Goodwill Amortization

During October 2013, Dixie Toga, Ltda ("Dixie Toga"), a Bemis subsidiary, received an income tax assessment in Brazil for the tax years 2009 through 2011 that relates to the amortization of certain goodwill generated from the acquisition of Dixie Toga. The income tax assessed for those years is approximately $9.8 million, translated to U.S. dollars at the December 31, 2018 exchange rate. The Company expects that tax examinations for years after 2011 will include similar assessments as the Company continues to claim the tax benefits associated with the goodwill amortization. An ultimate adverse resolution on these assessments, including interest and penalties, could be material to the Company's consolidated results of operations and/or cash flows.

The Company has been advised by its legal and tax advisors that its position with respect to the deductions is allowable under the tax laws of Brazil. The Company is contesting the disallowance and believes it is more likely than not the tax benefit will be sustained in its entirety and consequently has not recorded a liability. In May of 2017, the Company received a favorable administrative decision. The government is appealing this decision to the next administrative level. The Company intends to litigate the matter if it is not resolved at the administrative appeals levels. The ultimate outcome could take several years. At this time, the Company believes that final resolution of the assessment will not have a material impact on the Company's consolidated financial statements.

Brazil Tax Credits

During October 2018, Bemis Do Brasil Industria E Comercio De Embalagens Ltda. (“Bemis Brazil”), a Bemis subsidiary, received a final decision from the Brazilian court regarding our claim that certain indirect taxes were incorrectly required to be paid in the years 2001 through 2017. As a result of this case, Bemis Brazil expects to receive tax credits for the overpaid tax and related interest that can be used to offset various Brazilian federal taxes in future years. The exact methodology to compute the amount of the tax credit is still being determined by the tax authorities. In the fourth quarter of 2018, Bemis Brazil hired an outside consultant to compile documentation required to claim the credit. Bemis Brazil has estimated that it is probable to receive a benefit, net of fees and applicable Brazilian taxes, of $10.1 million (translated into U.S. dollars as of December 31, 2018) for the years 2009-2017. We reflected the $10.1 million benefit by recording $15.3 million on the consolidated statement of income in other operating income offset by $5.2 million of income tax included within income taxes provision (benefit). Bemis Brazil has not completed the estimation of tax credits for the years 2001 through 2008 given the need to gather and review manual records from this time period. The completion of this estimate is expected in 2019 and will result in recording further benefits. In addition, a taxpayer favorable decision on the methodology to compute the tax credits may result in significantly more tax credits, subject to some limitations, being available to Bemis Brazil.