Our financial statements include the consolidated accounts of PepsiCo, Inc. and the affiliates that we control. In addition, we include our share of the results of certain other affiliates based on our economic ownership interest. We do not control these other affiliates, as our ownership in these other affiliates is generally less than 50%. Equity income or loss from our anchor bottlers is recorded as bottling equity income in our income statement. Bottling equity income also includes any changes in our ownership interests of our anchor bottlers. Bottling equity income includes $147 million of pre-tax gains on our sales of PBG and PAS stock in 2008 and $174 million of pre-tax gains on our sales of PBG stock in 2007. There were no sales of PBG or PAS stock in 2009. See Notes 8 and 15 for additional information on our significant noncontrolled bottling affiliates. Income or loss from other noncontrolled affiliates is recorded as a component of selling, general and administrative expenses. Intercompany balances and transactions are eliminated. Our fiscal year ends on the last Saturday of each December, resulting in an additional week of results every five or six years.
Raw materials, direct labor and plant overhead, as well as purchasing and receiving costs, costs directly related to production planning, inspection costs and raw material handling facilities, are included in cost of sales. The costs of moving, storing and delivering finished product are included in selling, general and administrative expenses.
The preparation of our consolidated financial statements in conformity with generally accepted accounting principles requires us to make estimates and assumptions that affect reported amounts of assets, liabilities, revenues, expenses and disclosure of contingent assets and liabilities. Estimates are used in determining, among other items, sales incentives accruals, tax reserves, stock-based compensation, pension and retiree medical accruals, useful lives for intangible assets, and future cash flows associated with impairment testing for perpetual brands, goodwill and other long-lived assets. We evaluate our estimates on an on-going basis using our historical experience, as well as other factors we believe appropriate under the circumstances, such as current economic conditions, and adjust or revise our estimates as circumstances change. As future events and their effect cannot be determined with precision, actual results could differ significantly from these estimates.
While the majority of our results are reported on a weekly calendar basis, most of our international operations report on a monthly calendar basis. The following chart details our quarterly reporting schedule:
See "Our Divisions" below and for additional unaudited information on items affecting the comparability of our consolidated results, see "Items Affecting Comparability" in Management's Discussion and Analysis of Financial Condition and Results of Operations.
Tabular dollars are in millions, except per share amounts. All per share amounts reflect common per share amounts, assume dilution unless noted, and are based on unrounded amounts. Certain reclassifications were made to prior years' amounts to conform to the 2009 presentation.
We manufacture or use contract manufacturers, market and sell a variety of salty, convenient, sweet and grain-based snacks, carbonated and non-carbonated beverages, and foods in over 200 countries with our largest operations in North America (United States and Canada), Mexico and the United Kingdom. Division results are based on how our Chief Executive Officer assesses the performance of and allocates resources to our divisions. For additional unaudited information on our divisions, see "Our Operations" in Management's Discussion and Analysis of Financial Condition and Results of Operations. The accounting policies for the divisions are the same as those described in Note 2, except for the following allocation methodologies:
Our divisions are held accountable for stock-based compensation expense and, therefore, this expense is allocated to our divisions as an incremental employee compensation cost. The allocation of stock-based compensation expense in 2009 was approximately 27% to FLNA, 3% to QFNA, 6% to LAF, 21% to PAB, 13% to Europe, 13% to AMEA and 17% to corporate unallocated expenses. We had similar allocations of stock-based compensation expense to our divisions in 2008 and 2007. The expense allocated to our divisions excludes any impact of changes in our assumptions during the year which reflect market conditions over which division management has no control. Therefore, any variances between allocated expense and our actual expense are recognized in corporate unallocated expenses.
Pension and retiree medical service costs measured at a fixed discount rate, as well as amortization of gains and losses due to demographics, including salary experience, are reflected in division results for North American employees. Division results also include interest costs, measured at a fixed discount rate, for retiree medical plans. Interest costs for the pension plans, pension asset returns and the impact of pension funding, and gains and losses other than those due to demographics, are all reflected in corporate unallocated expenses. In addition, corporate unallocated expenses include the difference between the service costs measured at a fixed discount rate (included in division results as noted above) and the total service costs determined using the Plans' discount rates as disclosed in Note 7.
We centrally manage commodity derivatives on behalf of our divisions. These commodity derivatives include energy, fruit and other raw materials. Certain of these commodity derivatives do not qualify for hedge accounting treatment and are marked to market with the resulting gains and losses reflected in corporate unallocated expenses. These gains and losses are subsequently reflected in division results when the divisions take delivery of the underlying commodity. Therefore, the divisions realize the economic effects of the derivative without experiencing any resulting mark-to-market volatility, which remains in corporate unallocated expenses. These derivatives hedge underlying commodity price risk and were not entered into for speculative purposes.
In 2007, we expanded our commodity hedging program to include derivative contracts used to mitigate our exposure to price changes associated with our purchases of fruit. In addition, in 2008, we entered into additional contracts to further reduce our exposure to price fluctuations in our raw material and energy costs. The majority of these contracts do not qualify for hedge accounting treatment and are marked to market with the resulting gains and losses recognized in corporate unallocated expenses within selling, general and administrative expenses. These gains and losses are subsequently reflected in division results.
Corporate includes costs of our corporate headquarters, centrally managed initiatives, such as our ongoing business transformation initiative and research and development projects, unallocated insurance and benefit programs, foreign exchange transaction gains and losses, certain commodity derivative gains and losses and certain other items.