Financial Instruments - Summary of Credit Receivable (Details) - USD ($) $ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure Of Financial Instruments [Abstract]
Trade receivables	$ 2,995	$ 2,639
Unbilled revenues	$ 1,650	$ 1,111

The amount of assets representing income that has been earned but is not yet a receivable, including contract assets. [Refer: Contract assets]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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