6Critical accounting estimates and judgments

All estimates and assessments are continually reviewed and are based on historical experience and other factors, including expectations regarding future events that appear reasonable under the given circumstances. The group makes estimates and assumptions that relate to the future. By their nature, these estimates will only rarely correspond to actual subsequent events. The estimates and assumptions that carry a significant risk, in the form of a substantial adjustment to the measurement of assets and liabilities within the next financial year, are set out below.

Employee benefit plans

Assets, liabilities and costs for defined benefit pension plans and other post-employment plans are determined on an actuarial basis using a number of assumptions. Assumptions used in determining the defined benefit assets / obligations include the discount rate, future salary and pension increases, and mortality rates. The assumptions are reviewed and reassessed at the end of each year based on observable market data, i.e., market yields of high-quality corporate bonds denominated in the corresponding currency and asset management studies. In case a defined benefit plan results in a surplus, the group needs to calculate the asset ceiling and the present value of the economic benefits available in the form of refunds or reductions in future contributions to the plan. For the calculation of the economic benefits, the future benefits are discounted with the applicable discount rate, adjusted for estimated future salary increases. These estimates might significantly impact the balance sheet. Further details on the defined benefit plans are provided in note 9 and note 34.

Income taxes

The group is subject to income taxes in numerous jurisdictions. Assumptions are required in order to determine income tax provisions. There are transactions and calculations for which the ultimate tax determination is uncertain during the ordinary course of business. The group recognizes liabilities for anticipated tax audit issues based on estimates of whether additional taxes will be due. Where the final tax outcome of these matters is different from the amounts that were initially recorded, such differences will impact the income tax and deferred tax provisions in the period in which such determination is made. Management believes that the estimates are reasonable, and that the recognized liabilities for income tax-related uncertainties are adequate. Further details are disclosed in note 13.

Goodwill and other intangible assets

The group carries out an annual impairment test on goodwill in the first quarter of the year (after the budget and the three-year strategic plan have been approved by the Board of Directors in February), or when indications of a potential impairment exist. The recoverable amount from cash-generating units is measured on the basis of value-in-use calculations, with the terminal growth rate, the discount rate, and the projected cash flows as the main variables. Information about assumptions and estimation uncertainties that have significant risk of resulting in a material adjustment are disclosed in note 14. The accounting policies are disclosed in note 34.

Lease assets and lease liabilities

The group has applied judgment to determine the lease term for lease contracts that include renewal and termination options. The assessment of whether the group is reasonably certain to exercise such options impacts the lease term, which significantly affects the amount of lease liabilities and lease assets recognized. This assessment depends on economic incentives, such as removal and relocation costs. Further details are disclosed in note 16 and note 34.

Sales

At contract inception, the group assesses the goods or services promised in a contract with a customer and identifies each promise to transfer to the customer as a performance obligation. The group considers the terms of the contract and all other relevant facts, including the economic substance of the transaction. Judgment is needed to determine whether there is a single performance obligation or multiple separate performance obligations. 

If the consideration promised in a contract includes a variable amount (e.g., expected liquidated damages, early payment discounts, volume discounts), the group estimates the amount of consideration to which the group will be entitled in exchange for transferring the promised goods or services to a customer. The amount of the variable consideration is estimated by using either of the following methods, depending on which method the group expects to better predict the amount of consideration to which it will be entitled: the expected value or the most likely amount. The method selected is applied consistently throughout the contract and to similar types of contracts when estimating the effect of uncertainty on the amount of variable consideration to which the group is entitled. Depending on the outcome of the respective transactions, actual payments may differ from these estimates.

To allocate the transaction price to each performance obligation on a relative stand-alone selling price basis, the group determines the stand-alone selling price at contract inception of the distinct good or service underlying each performance obligation in the contract and allocates the transaction price in proportion to those stand-alone selling prices. If the stand-alone selling price is not directly observable, then the group estimates the amount with the expected cost-plus-margin method.

The group recognizes sales either over time or at a point in time. Sales are recognized over time if any of the conditions described in note 34 are met. The most critical estimate in determining whether sales should be recorded over time or at a point in time, is the existence of a right to payment. The group estimates if an enforceable right to payment (including reasonable profit margin) for performance to date exists in case the customer terminates the contract for convenience. For this estimate, the group reviews the contracts and considers relevant laws, legal precedents and customary business practice.

Applying the over time method requires the group to estimate the proportional sales and costs. To measure the stage of completion, generally, the cost-to-cost method is applied. Work progress of sub-suppliers is considered in determining the stage of completion. If circumstances arise that may change the original estimates of sales, costs or extent of progress toward completion, estimates are revised. These revisions may result in increases or decreases in estimated sales or costs and are reflected in income in the period in which the circumstances that give rise to the revision become known by management.

Further details are disclosed in note 20 and note 34.

Provisions

Provisions are made, among other reasons, for warranties, disputes, litigation and restructuring. A provision is recognized in the balance sheet when the group has a legal or constructive obligation as a result of a past event, and it is probable that an outflow of economic benefits will be required to settle the obligation. The nature of these costs is such that judgment has to be applied to estimate the timing and amount of cash outflows. Depending on the outcome of the respective transactions, actual payments may differ from these estimates. Further details are disclosed in note 27 and note 34. 

Financial assets

The fair value needs to be measured for the financial assets measured at fair value through P&L. If there is no observable fair value, valuation approaches relying on unobservable inputs are used. These inputs inherently require a higher level of judgement. Assumptions and estimates of unobservable market inputs in the fair valuation of financial assets require significant judgment and could affect amounts recognized in the statement of income.