Note 22. Commitments and Contingencies Purchase Commitments We have various purchase commitments extending through 2029 for materials, supplies and services entered into in the ordinary course of business. Included in the purchase commitments table below are contracts which require minimum volume purchases that extend beyond one year or are renewable annually and have been renewed for 2019 . Certain contracts allow for changes in minimum required purchase volumes in the event of a temporary or permanent shutdown of a facility. To the extent the contract requires a minimum notice period; such notice period has been included in the table below. The contractual purchase prices for substantially all of these contracts are variable based upon market prices, subject to annual negotiations. We have estimated our contractual obligations by using the terms of our current pricing for each contract. We also have a limited number of contracts which require a minimum payment even if no volume is purchased. We believe that all of our purchase obligations will be utilized in our normal operations. For the years ended December 31, 2018 , 2017 and 2016 , we made minimum payments under such take or pay contracts without taking the product of nil , $2 million and $1 million , respectively. Total purchase commitments as of December 31, 2018 were as follows: Year ended December 31, Amount 2019 $ 110 2020 105 2021 62 2022 61 2023 6 Thereafter 25 Operating Leases We lease certain premises, automobiles, and office equipment under long-term lease agreements. The total expense recorded under operating lease agreements in the consolidated and combined statements of operations was $16 million , $13 million and $9 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. Future minimum lease payments under noncancelable operating leases as of December 31, 2018 were as follows: Year ended December 31, Amounts 2019 $ 13 2020 11 2021 9 2022 6 2023 4 Thereafter 40 Total $ 83 Legal Proceedings Shareholder Litigation On February 8, 2019 we, certain or our executive officers, Huntsman and certain banks who acted as underwriters in connection with our IPO and secondary offering were named as defendants in a proposed class action civil suit filed in the District Court for the State of Texas, Dallas County, by a purchaser of our ordinary shares in connection with our IPO on August 3, 2017 and our secondary offering on December 1, 2017. The plaintiff, Macomb County Employees Retirement System, alleges that inaccurate and misleading statements were made regarding our response to the fire that occurred at our Pori, Finland manufacturing facility, among other allegations. The plaintiff seeks to determine that the proceeding is a class action, and to obtain alleged compensatory damages, costs, rescission and equitable relief. We may be required to indemnify our executive officers, Huntsman and the banks who acted as underwriters in our IPO and secondary offerings for losses incurred by them in connection with these matters pursuant to our agreements with such parties. Because of the early stage of this litigation, we are unable to reasonably estimate any possible loss or range of loss and we have made no accrual with regard to this matter. Other Matters We are a party to various proceedings instituted by private plaintiffs, governmental authorities and others arising under provisions of applicable laws, including various environmental, products liability and other laws. Except as otherwise disclosed in these consolidated and combined financial statements, we do not believe that the outcome of any of these matters will have a material effect on our financial condition, results of operations or liquidity.