Revenues under contract brewing arrangements are recognized when our obligation related to the finished product is fulfilled and control of the product transfers to these other brewers. We also have licensing agreements with third party partners who brew and distribute our products in various markets across our segments. Under these agreements, we are compensated based on the amount of products sold by our partners in these markets at an agreed upon royalty rate or profit percentage. We apply the sales-based royalty practical expedient to these licensing arrangements and recognize revenue as product is sold by our partners at the agreed upon rate. Our revenue generating activities include variable consideration which is recorded as a reduction of the transaction price based upon expected amounts at the time revenue for the corresponding product sale is recognized. For example, customer promotional discount programs are entered into with certain distributors for certain periods of time. The amount ultimately reimbursed to distributors is determined based upon agreed-upon promotional discounts which are applied to distributors' sales to retailers. Other common forms of variable consideration include volume rebates for meeting established sales targets, and coupons and mail-in rebates offered to the end consumer. The determination of the reduction of the transaction price for variable consideration requires that we make certain estimates and assumptions that affect the timing and amounts of revenue and liabilities recorded. We estimate this variable consideration, including analyzing for a potential constraint on variable consideration, by taking into account factors such as the nature of the promotional activity, historical information and current trends, availability of actual results, and expectations of customer and consumer behavior. We have evaluated these other revenue generating activities under the disaggregation disclosure criteria outlined within the guidance and concluded that these other revenue generating activities are immaterial for separate disclosure. See  Note 3, "Segment Reporting,"  for disclosure of revenues by geographic segment. We do not have standard terms that permit return of product; however, in certain markets where returns occur we estimate the amount of returns as variable consideration based on historical return experience and adjust our revenue accordingly. Products that do not meet our high quality standards are returned by the customer or recalled and destroyed and are recorded as a reduction of revenue. The reversal of revenue is recorded upon determination that the product will be recalled and destroyed. We estimate the costs required to facilitate product returns and record them in cost of goods sold as required. During the twelve months ended December 31, 2018, adjustments to revenue from performance obligations satisfied in the prior period due to changes in estimates in variable consideration were immaterial. In certain of our businesses where such practices are legally permitted, we make loans or advanced payments to retail outlets that sell our brands. For arrangements that do not span greater than one year, we apply the practical expedient available under ASC 606 and do not adjust the transaction price for the effects of a potential significant financing component. We further analyze arrangements that span greater than one year on an ongoing basis to determine whether a significant financing component exists. No such arrangements existed during the twelve months ended December 31, 2018. Advance payments to customers, where legally permitted, are deferred and amortized as a reduction to revenue over the expected period of benefit and tested for recoverability as appropriate. All other costs to obtain contracts and fulfill are expensed as incurred based on the nature, significance and expected benefit of these costs relative to the contract. We continually evaluate whether our revenue generating activities and advanced payment arrangements with customers result in the recognition of contract assets or liabilities. No such assets or liabilities existed as of December 31, 2018, or December 31, 2017. Separately, trade accounts receivable, including affiliate receivables, approximates receivables from contracts with customers. Freight costs billed to customers for shipping and handling are recorded as revenue. Shipping and handling expense related to costs incurred to deliver product are recognized within cost of goods sold. We account for shipping and handling activities that occur after control has transferred as a fulfillment cost as opposed to a separate performance obligation, and the costs of shipping and handling are recognized concurrently with the related revenue. Significant Financing Component and Costs to Obtain Contracts Contract Assets and Liabilities Shipping and Handling Variable Consideration 92