Commitments and Contingencies In the normal course of business, we are subject to the effects of certain contractual stipulations, events, transactions, and laws and regulations that may, at times, require the recognition of liabilities, such as those related to self-insurance estimated liabilities and claims, legal and contractual issues, environmental laws and regulations, guarantees, and indemnities. We establish estimated liabilities when the associated costs related to uncertainties or guarantees become probable and can be reasonably estimated. For the period ended February 29, 2020 , no material changes have occurred in our estimated liabilities for self-insurance, litigation, environmental matters, guarantees and indemnities, or relevant events and circumstances, from those disclosed in the Commitments and Contingencies footnote of the Notes to Consolidated Financial Statements within our Form 10-K. Product Warranty and Recall Costs Our products generally have a standard warranty term of five years that assure our products comply with agreed upon specifications. We record an accrual for the estimated amount of future warranty costs when the related revenue is recognized. Estimated costs related to product recalls based on a formal campaign soliciting repair or return of that product are accrued when they are deemed to be probable and can be reasonably estimated. Estimated future warranty and recall costs are primarily based on historical experience of identified warranty and recall claims. However, there can be no assurance that future warranty or recall costs will not exceed historical amounts or that new technology products may not generate unexpected costs. If actual future warranty or recall costs exceed historical amounts, additional increases in the accrual may be required, which could have a material adverse impact on our results of operations and cash flows. Estimated liabilities for product warranty and recall costs are included in Other accrued liabilities and Other long-term liabilities on the Consolidated Balance Sheets. The following table summarizes changes in the estimated liabilities for product warranty and recall costs for the periods presented (in millions): Six Months Ended February 29, 2020 February 28, 2019 Beginning balance $ 11.5 $ 27.3 Warranty and recall costs 12.5 9.6 Payments and other deductions (12.5 ) (9.2 ) Acquired warranty and recall liabilities 0.1  ASC 606 adjustments (1)  (14.8 ) Ending balance $ 11.6 $ 12.9 ______________________________ (1) Certain service-type warranties accounted for as contingent liabilities prior to the adoption of ASC 606, Revenue from Contracts with Customers (ASC 606), are now reflected as contract liabilities effective September 1, 2018. Lighting Science Group Patent Litigation On April 30, 2019 and May 1, 2019, Lighting Science Group Corp. (LSG) filed complaints in the International Trade Commission and United States District Court for the District of Delaware, respectively, alleging infringement of eight patents by the Company and others. On May 17, 2019, LSG amended both of its complaints and dropped its claims regarding one of the patents. For the remaining seven patents, LSGs infringement allegations relate to certain of our LED luminaires and related systems. LSG seeks orders from the International Trade Commission to preclude the importation and sale of the accused products. LSG seeks unspecified monetary damages, costs, and attorneys fees in the District of Delaware action. We dispute and have numerous defenses to the allegations, and we intend to vigorously defend against LSGs claims. Estimating an amount or range of possible losses resulting from litigation proceedings is inherently difficult, particularly where the matters involve indeterminate claims for monetary damages and a request for an exclusion order and are in the stages of the proceedings where key factual and legal issues have not been resolved. For these reasons, we currently are unable to predict the ultimate timing or outcome of or reasonably estimate the possible losses or a range of possible losses resulting from these matters. Securities Class Action On January 3, 2018, a shareholder filed a class action complaint in the United States District Court for the District of Delaware against us and certain of our officers on behalf of all persons who purchased or otherwise acquired our stock between June 29, 2016 and April 3, 2017. On February 20, 2018, a different shareholder filed a second class action complaint in the same venue against the same parties on behalf of all persons who purchased or otherwise acquired our stock between October 15, 2015 and April 3, 2017. The cases were transferred on April 30, 2018, to the United States District Court for the Northern District of Georgia and subsequently were consolidated as In re Acuity Brands, Inc. Securities Litigation, Civil Action No. 1:18-cv-02140-MHC (N.D. Ga.). On October 5, 2018, the court-appointed lead plaintiff filed a consolidated amended class action complaint (the Consolidated Complaint), which supersedes the initial complaints. The Consolidated Complaint is brought on behalf of all persons who purchased our common stock between October 7, 2015 and April 3, 2017 and alleges that we and certain of our current officers and one former executive violated the federal securities laws by making false or misleading statements and/or omitting to disclose material adverse facts that (i) concealed known trends negatively impacting sales of our products and (ii) overstated our ability to achieve profitable sales growth. The plaintiffs seek class certification, unspecified monetary damages, costs, and attorneys fees. We dispute the allegations in the complaints and intend to vigorously defend against the claims. We filed a motion to dismiss the Consolidated Complaint. On August 12, 2019, the court entered an order granting our motion to dismiss in part and dismissing all claims based on 42 of the 47 statements challenged in the Consolidated Complaint but also denying the motion in part and allowing claims based on five challenged statements to proceed to discovery. Estimating an amount or range of possible losses resulting from litigation proceedings is inherently difficult, particularly where the matters involve indeterminate claims for monetary damages and are in the stages of the proceedings where key factual and legal issues have not been resolved. For these reasons, we are currently unable to predict the ultimate timing or outcome of or reasonably estimate the possible losses or a range of possible losses resulting from the matters described above. We are insured, in excess of a self-retention, for Directors and Officers liability. Trade Compliance Matters In the course of routine reviews of import and export activity, we previously determined that we misclassified and/or inaccurately valued certain international shipments of products. We are conducting a detailed review of this activity to determine the extent of any liabilities and implementing the appropriate remedial measures. At this time, we are unable to determine the likelihood or amount of loss, if any, associated with these shipments. Litigation We are subject to various other legal claims arising in the normal course of business, including patent infringement, employment matters, and product liability claims. Based on information currently available, it is the opinion of management that the ultimate resolution of pending and threatened legal proceedings will not have a material adverse effect on our financial condition, results of operations, or cash flows. However, in the event of unexpected future developments, it is possible that the ultimate resolution of any such matters, if unfavorable, could have a material adverse effect on our financial condition, results of operations, or cash flows in future periods. We establish estimated liabilities for legal claims when associated costs become probable and can be reasonably estimated. The actual costs of resolving legal claims may be substantially higher than the amounts accrued for such claims. However, we cannot make a meaningful estimate of actual costs to be incurred that could possibly be higher or lower than the accrued amounts.