Annual Report 2020

83 NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS 綜合財務報表附註 FOR THE YEAR ENDED 31ST DECEMBER, 2020 截至二零二零年十二月三十一日止年度 ANNUAL REPORT 2020 年度報告 3. 綜合財務報表編製基準及主要會計政策 （續） 主要會計政策 （續） 綜合基準 （續） 附屬公司之綜合入賬於本集團取得有關附屬公司之 控制權起開始，並於本集團失去有關附屬公司之控 制權時終止。具體而言，年內所收購或出售附屬公 司之收入及開支乃自本集團取得控制權之日期起計 入綜合損益及其他全面收益表，直至本集團不再控 制有關附屬公司之日期為止。 如有需要，本集團會對附屬公司財務報表作出調 整，以使彼等之會計政策與本集團之會計政策一 致。 本集團內公司間之所有資產及負債、權益、收入、 開支及有關本集團成員之間交易的現金流量，已於 綜合賬目時悉數對銷。 來自客戶合約的收益 當（或於）滿足履約責任時，本集團確認收益，即於 特定履約責任的相關貨品或服務的「控制權」轉讓予 客戶時確認。 履約責任指不同的貨品及服務（或一組貨品或服務） 或一系列不同的貨品及大致相同的服務。 控制權隨時間轉移，而倘滿足以下其中一項條件， 則收益乃參照完全滿足相關履約責任的進展情況而 隨時間確認： • 隨本集團履約，客戶同時取得並耗用本集團 履約所提供的利益； • 本集團之履約創建或強化一項資產，該資產 於創建或強化之時即由客戶控制；或 • 本集團的履約並未產生對本集團有替代用途 的資產，且本集團對迄今已完成履約之款項 具有可執行之權利。 3. BASIS OF PREPARATION OF CONSOLIDATED FINANCIAL STATEMENTS AND SIGNIFICANT ACCOUNTING POLICIES (Continued) Significant accounting policies (Continued) Basis of consolidation (Continued) Consolidation of a subsidiary begins when the Group obtains control over the subsidiary and ceases when the Group loses control of the subsidiary. Specifically, income and expenses of subsidiaries acquired or disposed of during the year are included in the consolidated statement of profit or loss and other comprehensive income from the date the Group gains control until the date when the Group ceases to control the subsidiary. Where necessary, adjustments are made to the financial statements of subsidiaries to bring their accounting policies in line with the Group’s accounting policies. All intragroup assets and liabilities, equity, income, expenses and cash flows relating to transactions between members of the Group are eliminated in full on consolidation. Revenue from contracts with customers The Group recognises revenue when (or as) a performance obligation is satisfied, i.e. when “control” of the goods or services underlying the particular performance obligation is transferred to the customer. A performance obligation represents a good or service (or a bundle of goods or services) that is distinct or a series of distinct goods or services that are substantially the same. Control is transferred over time and revenue is recognised over time by reference to the progress towards complete satisfaction of the relevant performance obligation if one of the following criteria is met: • the customer simultaneously receives and consumes the benefits provided by the Group’s performance as the Group performs; • the Group’s performance creates or enhances an asset that the customer controls as the Group performs; or • the Group’s performance does not create an asset with an alternative use to the Group and the Group has an enforceable right to payment for performance completed to date.