Provisions - Summary of Detailed Information About Provisions (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2025 INR (₨)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 INR (₨)
Non-current
Provision for onerous contracts	₨ 294		₨ 0
Non-current provisions	294	$ 3	0
Current
Provision for onerous contracts	1,288		1,599
Provision for warranty	207		217
Others	142		155
Current provisions	1,637	$ 19	1,971
Total	₨ 1,931		₨ 1,971

The amount of current provisions, including provisions for employee benefits. [Refer: Provisions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 54
-Subparagraph l
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_l&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_CurrentProvisions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ifrs-full_CurrentProvisionsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of non-current provision for onerous contracts. [Refer: Onerous contracts provision]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 37
-IssueDate 2024-01-01
-Paragraph 66
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_66&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_LongtermOnerousContractsProvision
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of non-current provisions, including provisions for employee benefits. [Refer: Provisions]

+ References

+ Details

Name:	ifrs-full_NoncurrentProvisions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ifrs-full_NoncurrentProvisionsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of current provisions other than provisions for employee benefits. [Refer: Provisions]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 78
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_d&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_OtherShorttermProvisions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of liabilities of uncertain timing or amount, including provisions for employee benefits.

+ References

+ Details

Name:	ifrs-full_Provisions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of current provision for onerous contracts. [Refer: Onerous contracts provision]

+ References

+ Details

Name:	ifrs-full_ShorttermOnerousContractsProvision
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of current provision for warranties. [Refer: Warranty provision]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 37
-IssueDate 2024-01-01
-Section Example 1 Warranties
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&doctype=Illustrative%20Examples&dita_xref=IAS37_IE_C_ex1_TI
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 37
-IssueDate 2024-01-01
-Paragraph 87
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_87&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ShorttermWarrantyProvision
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant