In May 2021, the IASB issued Deferred tax related to assets and liabilities arising from a single transaction (Amendments to IAS 12 Income Taxes) to clarify how to account for deferred tax on transactions such as leases and decommissioning obligations. The amendments are effective for reporting periods beginning on or after January 1, 2023. We adopted this standard as of January 1, 2023. The adoption of this standard had no material impact on our consolidated financial statements.
IFRS 17 Insurance Contracts
In May 2017, the IASB issued IFRS 17 Insurance Contracts. IFRS 17 replaces IFRS 4 and sets out principles for the recognition, measurement, presentation and disclosure of insurance contracts within the scope of IFRS 17. This standard is effective for reporting periods beginning on or after January 1, 2023. We adopted this standard as of January 1, 2023. The adoption of this standard had no material impact on our consolidated financial statements.
3 . SEGMENT AND CUSTOMER REPORTING
Segments:
Celestica delivers innovative supply chain solutions globally to customers in two operating and reportable segments: Advanced Technology Solutions (ATS) and Connectivity & Cloud Solutions (CCS). Our ATS segment consists of our ATS end market, and is comprised of our Aerospace and Defense (A&D), Industrial, HealthTech and Capital Equipment businesses. Our CCS segment consists of our Communications and Enterprise (servers and storage) end markets. See note 25 to our 2022 AFS for a description of the businesses that comprise our segments. Segment performance is evaluated based on segment revenue, segment income and segment margin (segment income as a percentage of segment revenue). Segment income is defined as a segment’s net revenue less its cost of sales and its allocable portion of selling, general and administrative expenses and research and development expenses (collectively, Segment Costs). Identifiable Segment Costs are allocated directly to the applicable segment while other Segment Costs, including indirect costs and certain corporate charges, are allocated to our segments based on an analysis of the relative usage or benefit derived by each segment from such costs. Segment income for the periods set forth below excludes finance costs (defined in note 6), employee stock-based compensation (SBC) expense, amortization of intangible assets (excluding computer software), and other charges (the components of which are described in note 8), as these costs and charges are managed and reviewed by our Chief Executive Officer (CEO) at the company level. In December 2022, we entered into a total return swap (TRS) agreement (TRS Agreement). Commencing in Q1 2023, TRS fair value adjustments (TRS FVAs) are also excluded in our determination of segment income, as similar to employee SBC expense, they are managed and reviewed by our CEO at the company level. Although segment income and segment margin are used to evaluate the performance of our segments, we may incur operating costs in one segment that may also benefit the other segment. Our accounting policies for segment reporting are the same as those applied to Celestica as a whole.
Information regarding the performance of our reportable segments is set forth below:
| Revenue by segment: | Three months ended March 31 | ||||||||
| 2022 | 2023 | ||||||||
| % of total | % of total | ||||||||
| ATS | $ | 696.7 | 44 | % | $ | 792.2 | 43 | % | |
| CCS | 870.2 | 56 | % | 1,045.6 | 57 | % | |||
| Communications end market revenue as a % of total revenue | 38 | % | 36 | % | |||||
| Enterprise end market revenue as a % of total revenue | 18 | % | 21 | % | |||||
| Total | $ | 1,566.9 | $ | 1,837.8 | |||||
