Provisions - Summary of Detailed Information About Provisions (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2026 INR (₨)	Mar. 31, 2026 USD ($)	Mar. 31, 2025 INR (₨)
Non-current
Provision for onerous contracts	₨ 224		₨ 294
Non-current provisions	224	$ 2	294
Current
Provision for onerous contracts	1,184		1,288
Provision for warranty	214		207
Others	98		142
Current provisions	1,496	$ 16	1,637
Total	₨ 1,720		₨ 1,931

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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+ Details

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Balance Type:	credit
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- Definition

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

+ References

+ Details

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- References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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- Definition

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

+ References

+ Details

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- Definition

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

+ References

+ Details

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Balance Type:	credit
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
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+ Details

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