Basis of preparation of consolidated financial statements	12 Months Ended
Mar. 31, 2023
Foreign exchange rates [abstract]
Basis of preparation of consolidated financial statements	2. Basis of preparation of consolidated financial statements (i) Statement of compliance and basis of preparation The consolidated financial statements have been prepared in compliance with International Financial Reporting Standards and its interpretations (“IFRS”), as issued by the International Accounting Standards Board (“IASB”). All accounting policies have been applied consistently to all periods presented in these consolidated financial statements, except for new accounting standards adopted by the Company. The consolidated financial statements correspond to the classification provisions contained in IAS 1(revised), “Presentation of Financial Statements”. For clarity, various items are aggregated in the consolidated statement of income, consolidated statement of comprehensive income and consolidated statement of financial position. These items are disaggregated separately in the notes to the consolidated financial statements, where applicable. All amounts included in the consolidated financial statements are reported in millions of Indian rupees (₹ in millions) except share and per share data, unless otherwise stated. Due to rounding off, the numbers presented throughout the document may not add up precisely to the totals and percentages may not precisely reflect the absolute figures. Previous year figures have been regrouped/rearranged, wherever necessary. (ii) Basis of measurement The consolidated financial statements have been prepared on a historical cost convention and on an accrual basis, except for the following material items which have been measured at fair value as required by relevant IFRS: a. Derivative financial instruments; b. Financial instruments classified as fair value through other comprehensive income or fair value through profit or loss; c. The defined benefit liability/(asset) is recognized as the present value of defined benefit obligation less fair value of plan assets; and d. Contingent consideration. (iii) Convenience translation (unaudited) The accompanying consolidated financial statements have been prepared and reported in Indian rupees, the functional currency of the Parent Company. Solely for the convenience of the readers, the consolidated financial statements as at and for the year ended March 31, 2023, have been translated into United States dollars at the certified foreign exchange rate of $1 = ₹ 82.19 as published by Federal Reserve Board of Governors on March 31, 2023. No representation is made that the Indian rupee amounts have been, could have been or could be converted into United States dollars at such a rate or any other rate. Due to rounding off, the translated numbers presented throughout the document may not add up precisely to the totals. (iv) Use of estimates and judgment The preparation of the consolidated financial statements in conformity with IFRS requires the management to make judgments, accounting estimates and assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, income, and expenses. Accounting estimates are monetary amounts in the consolidated financial statements that are subject to measurement uncertainty. An accounting policy may require items in consolidated financial statements to be measured at monetary amounts that cannot be observed directly and must instead be estimated. In such a case, management develops an accounting estimate to achieve the objective set out by the accounting policy. Developing accounting estimates involves the use of judgments or assumptions based on the latest available and reliable information. Actual results may differ from those accounting estimates. Accounting estimates and underlying assumptions are reviewed on an ongoing basis. Changes to accounting estimates are recognized in the period in which the estimates are changed and in any future periods affected. In particular, information about material areas of estimation, uncertainty and critical judgments in applying accounting policies that have the material effect on the amounts recognized in the consolidated financial statements are included in the following notes: a) Revenue recognition: The Company applies judgment to determine whether each product or service promised to a customer is capable of being distinct, and is distinct in the context of the contract, if not, the promised product or service is combined and accounted as a single performance obligation. The Company allocates the Transaction Price (as defined below) to separately identifiable performance obligation deliverables based on their relative stand-alone selling price. In cases where the Company is unable to determine the stand-alone selling price, the Company uses expected cost-plus margin approach in estimating the stand-alone selling price. The Company uses the percentage of completion method using the input (cost expended) method to measure progress towards completion in respect of fixed-price contracts. Percentage of completion method accounting relies on estimates of total expected contract revenue and costs. This method is followed when reasonably dependable estimates of the revenues and costs applicable to various elements of the contract can be made. Key factors that are reviewed in estimating the future costs to complete include estimates of future labor costs and productivity efficiencies. Because the financial reporting of these contracts depends on estimates that are assessed continually during the term of these contracts, revenue recognized, profit and timing of revenue for remaining performance obligations are subject to revisions as the contract progresses to completion. When estimates indicate that a loss will be incurred, the loss is provided for in the period in which the loss becomes probable. Volume discounts are recorded as a reduction of revenue. When the amount of discount varies with the levels of revenue, volume discount is recorded based on estimate of future revenue from the customer. b) Impairment testing: Goodwill recognized on business combination is tested for impairment at least annually and when events occur or changes in circumstances indicate that the recoverable amount of goodwill or a cash generating unit to which goodwill pertains, is less than the carrying value. The Company assesses acquired intangible assets with finite useful life for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. The recoverable amount of an asset or a cash generating unit is higher of value-in-use and fair value less cost of disposal. The calculation of value in use of an asset or a cash generating unit involves use of significant estimates and assumptions which include turnover, growth rates and net margins used to calculate projected future cash flows, risk-adjusted discount rate, future economic and market conditions. c) Income taxes: The major tax jurisdictions for the Company are India and the United States of America. Significant judgments are involved in determining the provision for income taxes including judgment on whether tax positions are probable of being sustained in tax assessments. A tax assessment can involve complex issues, which can only be resolved over extended time periods. Deferred tax is recorded on temporary differences between the tax bases of assets and liabilities and their carrying amounts, at the rates that have been enacted or substantively enacted at the reporting date. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable profits during the periods in which those temporary differences and tax loss carry-forwards become deductible. The Company considers expected reversal of deferred tax liabilities and projected future taxable income in making this assessment. The amount of deferred tax assets considered realizable, however, could reduce in the near term if estimates of future taxable income during the carry-forward period are reduced. d) Business combinations: In accounting for business combinations, judgment is required to assess whether an identifiable intangible asset is to be recorded separately from goodwill. Additionally, estimating the acquisition date fair value of the identifiable assets acquired (including useful life estimates), liabilities assumed, and contingent consideration assumed involves management judgment. These measurements are based on information available at the acquisition date and are based on expectations and assumptions that have been deemed reasonable by management. Changes in these judgments, estimates, and assumptions can materially affect the results of operations. e) Defined benefit plans and compensated absences: The cost of the defined benefit plans, compensated absences and the present value of the defined benefit obligations are based on actuarial valuation using the projected unit credit method. An actuarial valuation involves making various assumptions that may differ from actual developments in the future. These include the determination of the discount rate, future salary increases and mortality rates. Due to the complexities involved in the valuation and its long-term nature, a defined benefit obligation is highly sensitive to changes in these assumptions. All assumptions are reviewed at each reporting date. f) Expected credit losses on financial assets: The impairment provisions of financial assets are based on assumptions about risk of default and expected timing of collection. The Company uses judgment in making these assumptions and selecting the inputs to the expected credit loss calculation based on the Company’s history of collections, customer’s creditworthiness, existing market conditions as well as forward looking estimates at the end of each reporting period. g) Useful lives of property, plant and equipment: The Company depreciates property, plant and equipment on a straight-line basis over estimated useful lives of the assets. The charge in respect of periodic depreciation is derived based on an estimate of an asset’s expected useful life and the expected residual value at the end of its life. The lives are based on historical experience with similar assets as well as anticipation of future events, which may impact their life, such as changes in technology. The estimated useful life is reviewed at least annually. h) Useful lives of intangible assets: The Company amortizes intangible assets on a straight-line basis over estimated useful lives of the assets. The useful life is estimated based on a number of factors including the effects of obsolescence, demand, competition and other economic factors such as the stability of the industry and known technological advances and the level of maintenance expenditures required to obtain the expected future cash flows from the assets. The estimated useful life is reviewed at least annually. i) Provisions and contingent liabilities: The Company estimates the provisions that have present obligations as a result of past events and it is probable that outflow of resources will be required to settle the obligations. These provisions are reviewed at the end of each reporting date and are adjusted to reflect the current best estimates. The Company uses significant judgment to disclose contingent liabilities. Contingent liabilities are disclosed when there is a possible obligation arising from past events, the existence of which will be confirmed only by the occurrence or non-occurrence of one or more uncertain future events not wholly within the control of the Company or a present obligation that arises from past events where it is either not probable that an outflow of resources will be required to settle the obligation or a reliable estimate of the amount cannot be made. Contingent assets are neither recognized nor disclosed in the financial statements.

Basis of preparation of consolidated financial statements

12 Months Ended

Mar. 31, 2023

Basis of preparation of consolidated financial statements

2. Basis of preparation of consolidated financial statements

(i) Statement of compliance and basis of preparation

The consolidated financial statements have been prepared in compliance with International Financial Reporting Standards and its interpretations (“IFRS”), as issued by the International Accounting Standards Board (“IASB”). All accounting policies have been applied consistently to all periods presented in these consolidated financial statements, except for new accounting standards adopted by the Company.

The consolidated financial statements correspond to the classification provisions contained in IAS 1(revised), “Presentation of Financial Statements”. For clarity, various items are aggregated in the consolidated statement of income, consolidated statement of comprehensive income and consolidated statement of financial position. These items are disaggregated separately in the notes to the consolidated financial statements, where applicable.

All amounts included in the consolidated financial statements are reported in millions of Indian rupees (₹ in millions) except share and per share data, unless otherwise stated. Due to rounding off, the numbers presented throughout the document may not add up precisely to the totals and percentages may not precisely reflect the absolute figures. Previous year figures have been regrouped/rearranged, wherever necessary.

(ii) Basis of measurement

The consolidated financial statements have been prepared on a historical cost convention and on an accrual basis, except for the following material items which have been measured at fair value as required by relevant IFRS:

Derivative financial instruments;

Financial instruments classified as fair value through other comprehensive income or fair value through profit or loss;

The defined benefit liability/(asset) is recognized as the present value of defined benefit obligation less fair value of plan assets; and

Contingent consideration.

(iii) Convenience translation (unaudited)

The accompanying consolidated financial statements have been prepared and reported in Indian rupees, the functional currency of the Parent Company. Solely for the convenience of the readers, the consolidated financial statements as at and for the year ended March 31, 2023, have been translated into United States dollars at the certified foreign exchange rate of $1 = ₹ 82.19 as published by Federal Reserve Board of Governors on March 31, 2023. No representation is made that the Indian rupee amounts have been, could have been or could be converted into United States dollars at such a rate or any other rate. Due to rounding off, the translated numbers presented throughout the document may not add up precisely to the totals.

(iv) Use of estimates and judgment

The preparation of the consolidated financial statements in conformity with IFRS requires the management to make judgments, accounting estimates and assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, income, and expenses. Accounting estimates are monetary amounts in the consolidated financial statements that are subject to measurement uncertainty. An accounting policy may require items in consolidated financial statements to be measured at monetary amounts that cannot be observed directly and must instead be estimated. In such a case, management develops an accounting estimate to achieve the objective set out by the accounting policy. Developing accounting estimates involves the use of judgments or assumptions based on the latest available and reliable information. Actual results may differ from those accounting estimates.

Accounting estimates and underlying assumptions are reviewed on an ongoing basis. Changes to accounting estimates are recognized in the period in which the estimates are changed and in any future periods affected. In particular, information about material areas of estimation, uncertainty and critical judgments in applying accounting policies that have the material effect on the amounts recognized in the consolidated financial statements are included in the following notes:

Revenue recognition: The Company applies judgment to determine whether each product or service promised to a customer is capable of being distinct, and is distinct in the context of the contract, if not, the promised product or service is combined and accounted as a single performance obligation. The Company allocates the Transaction Price (as defined below) to separately identifiable performance obligation deliverables based on their relative stand-alone selling price. In cases where the Company is unable to determine the stand-alone selling price, the Company uses expected cost-plus margin approach in estimating the stand-alone selling price. The Company uses the percentage of completion method using the input (cost expended) method to measure progress towards completion in respect of fixed-price contracts. Percentage of completion method accounting relies on estimates of total expected contract revenue and costs. This method is followed when reasonably dependable estimates of the revenues and costs applicable to various elements of the contract can be made. Key factors that are reviewed in estimating the future costs to complete include estimates of future labor costs and productivity efficiencies. Because the financial reporting of these contracts depends on estimates that are assessed continually during the term of these contracts, revenue recognized, profit and timing of revenue for remaining performance obligations are subject to revisions as the contract progresses to completion. When estimates indicate that a loss will be incurred, the loss is provided for in the period in which the loss becomes probable. Volume discounts are recorded as a reduction of revenue. When the amount of discount varies with the levels of revenue, volume discount is recorded based on estimate of future revenue from the customer.

Impairment testing: Goodwill recognized on business combination is tested for impairment at least annually and when events occur or changes in circumstances indicate that the recoverable amount of goodwill or a cash generating unit to which goodwill pertains, is less than the carrying value. The Company assesses acquired intangible assets with finite useful life for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. The recoverable amount of an asset or a cash generating unit is higher of value-in-use and fair value less cost of disposal. The calculation of value in use of an asset or a cash generating unit involves use of significant estimates and assumptions which include turnover, growth rates and net margins used to calculate projected future cash flows, risk-adjusted discount rate, future economic and market conditions.

Income taxes: The major tax jurisdictions for the Company are India and the United States of America.

Significant judgments are involved in determining the provision for income taxes including judgment on whether tax positions are probable of being sustained in tax assessments. A tax assessment can involve complex issues, which can only be resolved over extended time periods.

Deferred tax is recorded on temporary differences between the tax bases of assets and liabilities and their carrying amounts, at the rates that have been enacted or substantively enacted at the reporting date. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable profits during the periods in which those temporary differences and tax loss carry-forwards become deductible. The Company considers expected reversal of deferred tax liabilities and projected future taxable income in making this assessment. The amount of deferred tax assets considered realizable, however, could reduce in the near term if estimates of future taxable income during the carry-forward period are reduced.

Business combinations: In accounting for business combinations, judgment is required to assess whether an identifiable intangible asset is to be recorded separately from goodwill. Additionally, estimating the acquisition date fair value of the identifiable assets acquired (including useful life estimates), liabilities assumed, and contingent consideration assumed involves management judgment. These measurements are based on information available at the acquisition date and are based on expectations and assumptions that have been deemed reasonable by management. Changes in these judgments, estimates, and assumptions can materially affect the results of operations.

Defined benefit plans and compensated absences: The cost of the defined benefit plans, compensated absences and the present value of the defined benefit obligations are based on actuarial valuation using the projected unit credit method. An actuarial valuation involves making various assumptions that may differ from actual developments in the future. These include the determination of the discount rate, future salary increases and mortality rates. Due to the complexities involved in the valuation and its long-term nature, a defined benefit obligation is highly sensitive to changes in these assumptions. All assumptions are reviewed at each reporting date.

Expected credit losses on financial assets: The impairment provisions of financial assets are based on assumptions about risk of default and expected timing of collection. The Company uses judgment in making these assumptions and selecting the inputs to the expected credit loss calculation based on the Company’s history of collections, customer’s creditworthiness, existing market conditions as well as forward looking estimates at the end of each reporting period.

Useful lives of property, plant and equipment: The Company depreciates property, plant and equipment on a straight-line basis over estimated useful lives of the assets. The charge in respect of periodic depreciation is derived based on an estimate of an asset’s expected useful life and the expected residual value at the end of its life. The lives are based on historical experience with similar assets as well as anticipation of future events, which may impact their life, such as changes in technology. The estimated useful life is reviewed at least annually.

Useful lives of intangible assets: The Company amortizes intangible assets on a straight-line basis over estimated useful lives of the assets. The useful life is estimated based on a number of factors including the effects of obsolescence, demand, competition and other economic factors such as the stability of the industry and known technological advances and the level of maintenance expenditures required to obtain the expected future cash flows from the assets. The estimated useful life is reviewed at least annually.

Provisions and contingent liabilities: The Company estimates the provisions that have present obligations as a result of past events and it is probable that outflow of resources will be required to settle the obligations. These provisions are reviewed at the end of each reporting date and are adjusted to reflect the current best estimates.

The Company uses significant judgment to disclose contingent liabilities. Contingent liabilities are disclosed when there is a possible obligation arising from past events, the existence of which will be confirmed only by the occurrence or non-occurrence of one or more uncertain future events not wholly within the control of the Company or a present obligation that arises from past events where it is either not probable that an outflow of resources will be required to settle the obligation or a reliable estimate of the amount cannot be made. Contingent assets are neither recognized nor disclosed in the financial statements.