Borrowings and capital resources - Total Borrowings (Details) - EUR (€) € in Millions	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Borrowings and capital resources
Current borrowings	€ (8,488)	€ (11,976)
Non-current borrowings	(59,272)	(62,949)
Borrowings	(67,760)	(74,925)
Spectrum licence payables	3,312	3,215
Financial liabilities at carrying value	492	1,850
Currency swap contract
Borrowings and capital resources
Decrease in net debt	100
Carrying value
Borrowings and capital resources
Financial assets at carrying value	44,634	47,500
Financial liabilities at carrying value	44,634	47,500
Fair value
Borrowings and capital resources
Financial assets at fair value	48,630	48,216
Financial liabilities at fair value	48,630	48,216
Impact of Egypt reclassification
Borrowings and capital resources
Current borrowings	(150)
Non-current borrowings	(57)
Derivative financial instruments included in trade and other receivables (note 14)
Borrowings and capital resources
Other financial assets	3,151	9,176
Derivative financial instruments included in trade and other payables (note 15)
Borrowings and capital resources
Other financial liabilities	4,010	4,767
Bonds
Borrowings and capital resources
Current borrowings	(2,251)	(1,912)
Non-current borrowings	(44,634)	(47,500)
Bank loans
Borrowings and capital resources
Current borrowings	(658)	(1,380)
Non-current borrowings	(761)	(1,500)
Collateral liabilities
Borrowings and capital resources
Current borrowings	(962)	(5,292)
Lease liabilities.
Borrowings and capital resources
Current borrowings	(3,123)	(2,984)
Non-current borrowings	(9,909)	(9,134)
Bank borrowings secured against Indian assets
Borrowings and capital resources
Current borrowings	(862)
Non-current borrowings	(385)	(1,346)
Other short-term borrowings
Borrowings and capital resources
Current borrowings	(632)	(408)
Other long-term borrowings
Borrowings and capital resources
Non-current borrowings	(3,583)	€ (3,469)
Derivative instruments in designated hedge relationships
Borrowings and capital resources
Net debt	€ 1,400

The amount of outstanding funds that the entity is obligated to repay.

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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