Commitments and Contingencies	9 Months Ended
Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Discontinued Operations Kaiser In 2006, we sold our entire equity interest in our Brazilian unit, Cervejarias Kaiser Brasil S.A. ("Kaiser") to FEMSA Cerveza S.A. de C.V. ("FEMSA"). The terms of the sale agreement require us to indemnify FEMSA for certain exposures related to tax, civil and labor contingencies arising prior to FEMSA's purchase of Kaiser. In addition, we provided an indemnity to FEMSA for losses Kaiser may incur with respect to tax claims associated with certain previously utilized purchased tax credits. The discontinued operations balances within the current and non-current liabilities of our unaudited condensed consolidated balance sheets consist entirely of our estimates of these liabilities. These liabilities are denominated in Brazilian Reais and are therefore subject to foreign exchange gains or losses, which are recognized in the discontinued operations section of the unaudited condensed consolidated statements of operations. There have been no changes in the underlying liabilities since December 31, 2016; therefore, all changes in the current and non-current liabilities of discontinued operations during the first three quarters of 2017 are due to fluctuations in foreign exchange rates from December 31, 2016, to September 30, 2017. During the three months ended September 30, 2017, and September 30, 2016, we recognized unrealized foreign exchange losses of $0.2 million and zero impact, respectively, from discontinued operations associated with foreign exchange movements related to indemnities we provided to FEMSA, and during the nine months ended September 30, 2017, and September 30, 2016, we recognized unrealized gains of $0.8 million and unrealized losses of $2.3 million, respectively. Our exposure related to the tax, civil and labor indemnity claims is capped at the amount of the sales price of the 68% equity interest of Kaiser, which was $68.0 million. Separately, the maximum potential claims amount remaining for the purchased tax credits was $110.7 million, based on foreign exchange rates as of September 30, 2017. Future settlement procedures and related negotiation activities associated with these contingencies are largely outside of our control. Due to the uncertainty involved with the ultimate outcome and timing of these contingencies, significant adjustments to the carrying values of the indemnity obligations have been recorded to date, and additional future adjustments may be required. Guarantees We guarantee indebtedness and other obligations to banks and other third parties for some of our equity method investments and consolidated subsidiaries. As of September 30, 2017, and December 31, 2016, the unaudited condensed consolidated balance sheets include liabilities related to these guarantees of $51.7 million and $36.1 million, respectively, primarily related to the guarantee of the indebtedness of our equity method investments. See Note 4, "Acquisition and Investments" for further detail. Litigation, Other Disputes and Environmental Related to litigation, other disputes and environmental issues, we have accrued an aggregate of $19.5 million as of September 30, 2017, and $27.7 million as of December 31, 2016. While we cannot predict the eventual aggregate cost for environmental and related matters in which we are currently involved, we believe adequate reserves have been provided for losses that are probable and estimable. Further, we believe that any payments, if required, for these matters would be made over a period of time in amounts that would not be material in any one year to our results from operations, cash flows or our financial or competitive position. Additionally, we believe that any reasonably possible losses in excess of the amounts accrued are immaterial to our unaudited condensed consolidated interim financial statements, except as otherwise noted. In addition to the specific cases discussed below, we are involved in other disputes and legal actions arising in the ordinary course of our business. While it is not feasible to predict or determine the outcome of these proceedings, in our opinion, based on a review with legal counsel, other than as noted, none of these disputes or legal actions are expected to have a material impact on our business, consolidated financial position, results of operations or cash flows. However, litigation is subject to inherent uncertainties and an adverse result in these or other matters may arise from time to time that may harm our business. Each year since 2014, we received assessments from a local country regulatory authority related to indirect tax calculations in our Europe operations. The aggregate amount of the assessments received at the time of resolution of this matter was approximately $139 million. We challenged the validity of these assessments and defended our position regarding our method of calculation, including by following the required regulatory procedures in order to proceed with an appeal of the assessments. During the fourth quarter of 2016, following discussions with the regulatory authority and consideration of existing facts and circumstances at that time, we concluded that a portion of this estimated range of loss was deemed probable. As a result, we recorded a charge of approximately $50 million within the excise taxes line item on the consolidated statement of operations for the year ended December 31, 2016. During the first quarter of 2017, a local jurisdictional court heard evidence in this matter and subsequently ruled in our favor in April 2017. Based on this favorable ruling, we released this provision in the first quarter of 2017 as we no longer deemed this loss probable. This resulted in a benefit of approximately $50 million, recorded within the excise taxes line item on the unaudited condensed consolidated statement of operations during the quarter ended March, 31, 2017. During the second quarter of 2017, we received formal confirmation from the regulatory authority that they would not appeal the local jurisdictional court ruling, and the regulatory authority has since withdrawn its assessments. As a result, we believe this dispute is fully resolved. Litigation and Other Disputes On December 12, 2014, a notice of action captioned David Hughes and 631992 Ontario Inc. v. Liquor Control Board of Ontario ("LCBO"), Brewers Retail Inc., Labatt Breweries of Canada LP, Molson Coors Canada and Sleeman Breweries Ltd. No. CV-14-518059-00CP was filed in Ontario, Canada in the Ontario Superior Court of Justice. BRI and its owners, including Molson Coors Canada, as well as the LCBO are named as defendants in the action. The plaintiffs allege that The Beer Store (retail outlets owned and operated by BRI) and LCBO improperly entered into an agreement to fix prices and market allocation within the Ontario beer market to the detriment of licensees and consumers. The plaintiffs seek to have the claim certified as a class action on behalf of all Ontario beer consumers and licensees and, among other things, damages in the amount of approximately CAD 1.4 billion. We note that The Beer Store operates according to the rules established by the Government of Ontario for regulation, sale and distribution of beer in the province. Additionally, prices at The Beer Store are independently set by each brewer and are approved by the LCBO on a weekly basis. As such, we currently believe the claim has been made without merit, and we intend to vigorously assert and defend our rights in this lawsuit. Environmental Our environmental matters and liabilities are presented in Note 18 of the Notes included in our Annual Report and did not significantly change during the first three quarters of 2017.

Commitments and Contingencies

Discontinued Operations

Kaiser

In 2006, we sold our entire equity interest in our Brazilian unit, Cervejarias Kaiser Brasil S.A. ("Kaiser") to FEMSA Cerveza S.A. de C.V. ("FEMSA"). The terms of the sale agreement require us to indemnify FEMSA for certain exposures related to tax, civil and labor contingencies arising prior to FEMSA's purchase of Kaiser. In addition, we provided an indemnity to FEMSA for losses Kaiser may incur with respect to tax claims associated with certain previously utilized purchased tax credits. The discontinued operations balances within the current and non-current liabilities of our unaudited condensed consolidated balance sheets consist entirely of our estimates of these liabilities. These liabilities are denominated in Brazilian Reais and are therefore subject to foreign exchange gains or losses, which are recognized in the discontinued operations section of the unaudited condensed consolidated statements of operations. There have been no changes in the underlying liabilities since December 31, 2016; therefore, all changes in the current and non-current liabilities of discontinued operations during the first three quarters of 2017 are due to fluctuations in foreign exchange rates from December 31, 2016, to September 30, 2017. During the three months ended September 30, 2017, and September 30, 2016, we recognized unrealized foreign exchange losses of $0.2 million and zero impact, respectively, from discontinued operations associated with foreign exchange movements related to indemnities we provided to FEMSA, and during the nine months ended September 30, 2017, and September 30, 2016, we recognized unrealized gains of $0.8 million and unrealized losses of $2.3 million, respectively. Our exposure related to the tax, civil and labor indemnity claims is capped at the amount of the sales price of the 68% equity interest of Kaiser, which was $68.0 million. Separately, the maximum potential claims amount remaining for the purchased tax credits was $110.7 million, based on foreign exchange rates as of September 30, 2017.

Future settlement procedures and related negotiation activities associated with these contingencies are largely outside of our control. Due to the uncertainty involved with the ultimate outcome and timing of these contingencies, significant adjustments to the carrying values of the indemnity obligations have been recorded to date, and additional future adjustments may be required.

Guarantees

We guarantee indebtedness and other obligations to banks and other third parties for some of our equity method investments and consolidated subsidiaries. As of September 30, 2017, and December 31, 2016, the unaudited condensed consolidated balance sheets include liabilities related to these guarantees of $51.7 million and $36.1 million, respectively, primarily related to the guarantee of the indebtedness of our equity method investments. See Note 4, "Acquisition and Investments" for further detail.

Litigation, Other Disputes and Environmental

Related to litigation, other disputes and environmental issues, we have accrued an aggregate of $19.5 million as of September 30, 2017, and $27.7 million as of December 31, 2016. While we cannot predict the eventual aggregate cost for environmental and related matters in which we are currently involved, we believe adequate reserves have been provided for losses that are probable and estimable. Further, we believe that any payments, if required, for these matters would be made over a period of time in amounts that would not be material in any one year to our results from operations, cash flows or our financial or competitive position. Additionally, we believe that any reasonably possible losses in excess of the amounts accrued are immaterial to our unaudited condensed consolidated interim financial statements, except as otherwise noted.

In addition to the specific cases discussed below, we are involved in other disputes and legal actions arising in the ordinary course of our business. While it is not feasible to predict or determine the outcome of these proceedings, in our opinion, based on a review with legal counsel, other than as noted, none of these disputes or legal actions are expected to have a material impact on our business, consolidated financial position, results of operations or cash flows. However, litigation is subject to inherent uncertainties and an adverse result in these or other matters may arise from time to time that may harm our business.

Each year since 2014, we received assessments from a local country regulatory authority related to indirect tax calculations in our Europe operations. The aggregate amount of the assessments received at the time of resolution of this matter was approximately $139 million. We challenged the validity of these assessments and defended our position regarding our method of calculation, including by following the required regulatory procedures in order to proceed with an appeal of the assessments. During the fourth quarter of 2016, following discussions with the regulatory authority and consideration of existing facts and circumstances at that time, we concluded that a portion of this estimated range of loss was deemed probable. As a result, we recorded a charge of approximately $50 million within the excise taxes line item on the consolidated statement of operations for the year ended December 31, 2016. During the first quarter of 2017, a local jurisdictional court heard evidence in this matter and subsequently ruled in our favor in April 2017. Based on this favorable ruling, we released this provision in the first quarter of 2017 as we no longer deemed this loss probable. This resulted in a benefit of approximately $50 million, recorded within the excise taxes line item on the unaudited condensed consolidated statement of operations during the quarter ended March, 31, 2017. During the second quarter of 2017, we received formal confirmation from the regulatory authority that they would not appeal the local jurisdictional court ruling, and the regulatory authority has since withdrawn its assessments. As a result, we believe this dispute is fully resolved.

Litigation and Other Disputes

On December 12, 2014, a notice of action captioned David Hughes and 631992 Ontario Inc. v. Liquor Control Board of Ontario ("LCBO"), Brewers Retail Inc., Labatt Breweries of Canada LP, Molson Coors Canada and Sleeman Breweries Ltd. No. CV-14-518059-00CP was filed in Ontario, Canada in the Ontario Superior Court of Justice. BRI and its owners, including Molson Coors Canada, as well as the LCBO are named as defendants in the action. The plaintiffs allege that The Beer Store (retail outlets owned and operated by BRI) and LCBO improperly entered into an agreement to fix prices and market allocation within the Ontario beer market to the detriment of licensees and consumers. The plaintiffs seek to have the claim certified as a class action on behalf of all Ontario beer consumers and licensees and, among other things, damages in the amount of approximately CAD 1.4 billion. We note that The Beer Store operates according to the rules established by the Government of Ontario for regulation, sale and distribution of beer in the province. Additionally, prices at The Beer Store are independently set by each brewer and are approved by the LCBO on a weekly basis. As such, we currently believe the claim has been made without merit, and we intend to vigorously assert and defend our rights in this lawsuit.

Environmental

Our environmental matters and liabilities are presented in Note 18 of the Notes included in our Annual Report and did not significantly change during the first three quarters of 2017.