v3.24.1.1.u2
Financial Instruments - Schedule of Carrying Value and Fair Value of Financial Instruments by Categories (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Mar. 31, 2023
Disclosure Of Financial Instruments [Line Items]    
Financial assets amortised cost $ 7,449 $ 6,589
Financial assets at fair value through profit or loss mandatory 395 197
Financial assets at fair value through OCI equity instruments designated upon initial recognition 25 24
Financial assets at fair value through OCI mandatory 2,331 1,929
Financial assets total carrying value 10,200 8,739
Financial assets total fair value 10,215 8,757
Financial liabilities amortised cost 3,363 3,592
Financial liabilities at fair value through profit or loss mandatory 76 93
Financial liabilities at fair value through OCI mandatory   2
Financial liabilities total carrying value 3,439 3,687
Financial liabilities total fair value 3,439 3,687
Trade Payables    
Disclosure Of Financial Instruments [Line Items]    
Financial liabilities amortised cost 474 470
Financial liabilities total carrying value 474 470
Financial liabilities total fair value 474 470
Lease liabilities    
Disclosure Of Financial Instruments [Line Items]    
Financial liabilities amortised cost 1,002 1,010
Financial liabilities total carrying value 1,002 1,010
Financial liabilities total fair value 1,002 1,010
Derivative Financial Instruments    
Disclosure Of Financial Instruments [Line Items]    
Financial liabilities at fair value through profit or loss mandatory 4 8
Financial liabilities at fair value through OCI mandatory   2
Financial liabilities total carrying value 4 10
Financial liabilities total fair value 4 10
Financial Liability Under Option Arrangements    
Disclosure Of Financial Instruments [Line Items]    
Financial liabilities at fair value through profit or loss mandatory 72 73
Financial liabilities total carrying value 72 73
Financial liabilities total fair value 72 73
Other Liabilities Including Contingent Consideration    
Disclosure Of Financial Instruments [Line Items]    
Financial liabilities amortised cost 1,887 2,112
Financial liabilities at fair value through profit or loss mandatory   12
Financial liabilities total carrying value 1,887 2,124
Financial liabilities total fair value 1,887 2,124
Contingent Consideration    
Disclosure Of Financial Instruments [Line Items]    
Financial liabilities total fair value   12
Cash and Cash Equivalents    
Disclosure Of Financial Instruments [Line Items]    
Financial assets amortised cost 1,773 1,481
Financial assets total carrying value 1,773 1,481
Financial assets total fair value 1,773 1,481
Liquid Mutual Funds    
Disclosure Of Financial Instruments [Line Items]    
Financial assets total fair value 313 119
Liquid Mutual Funds | Investments    
Disclosure Of Financial Instruments [Line Items]    
Financial assets at fair value through profit or loss mandatory 313 119
Financial assets total carrying value 313 119
Financial assets total fair value 313 119
Quoted Debt Securities    
Disclosure Of Financial Instruments [Line Items]    
Financial assets total fair value 1,620 1,661
Quoted Debt Securities | Investments    
Disclosure Of Financial Instruments [Line Items]    
Financial assets amortised cost 211 233
Financial assets at fair value through OCI mandatory 1,384 1,400
Financial assets total carrying value 1,595 1,633
Financial assets total fair value 1,620 [1] 1,661 [2]
Target Maturity Fund Units    
Disclosure Of Financial Instruments [Line Items]    
Financial assets total fair value 51 49
Target Maturity Fund Units | Investments    
Disclosure Of Financial Instruments [Line Items]    
Financial assets at fair value through profit or loss mandatory 51 49
Financial assets total carrying value 51 49
Financial assets total fair value 51 49
Certificates of Deposit    
Disclosure Of Financial Instruments [Line Items]    
Financial assets total fair value 365 435
Certificates of Deposit | Investments    
Disclosure Of Financial Instruments [Line Items]    
Financial assets at fair value through OCI mandatory 365 435
Financial assets total carrying value 365 435
Financial assets total fair value 365 435
Commercial Paper    
Disclosure Of Financial Instruments [Line Items]    
Financial assets total fair value 579 90
Commercial Paper | Investments    
Disclosure Of Financial Instruments [Line Items]    
Financial assets at fair value through OCI mandatory 579 90
Financial assets total carrying value 579 90
Financial assets total fair value 579 90
Quoted Equity Securities    
Disclosure Of Financial Instruments [Line Items]    
Financial assets total fair value 14  
Quoted Equity Securities | Investments    
Disclosure Of Financial Instruments [Line Items]    
Financial assets at fair value through OCI equity instruments designated upon initial recognition 14  
Financial assets total carrying value 14  
Financial assets total fair value 14  
Unquoted Equity and Preference Securities    
Disclosure Of Financial Instruments [Line Items]    
Financial assets total fair value 11 24
Unquoted Equity and Preference Securities | Investments    
Disclosure Of Financial Instruments [Line Items]    
Financial assets at fair value through OCI equity instruments designated upon initial recognition 11 24
Financial assets total carrying value 11 24
Financial assets total fair value 11 24
Unquoted Investments Others    
Disclosure Of Financial Instruments [Line Items]    
Financial assets total fair value 24 21
Unquoted Investments Others | Investments    
Disclosure Of Financial Instruments [Line Items]    
Financial assets at fair value through profit or loss mandatory 24 21
Financial assets total carrying value 24 21
Financial assets total fair value 24 21
Trade Receivables    
Disclosure Of Financial Instruments [Line Items]    
Financial assets amortised cost 3,620 3,094
Financial assets total carrying value 3,620 3,094
Financial assets total fair value 3,620 3,094
Unbilled Revenue    
Disclosure Of Financial Instruments [Line Items]    
Financial assets amortised cost 1,151 [3] 1,157 [4]
Financial assets total carrying value 1,151 [3] 1,157 [4]
Financial assets total fair value 1,151 [3] 1,157 [4]
Prepayments and Other Assets    
Disclosure Of Financial Instruments [Line Items]    
Financial assets amortised cost 694 624
Financial assets total carrying value 694 624
Financial assets total fair value 684 [5] 614 [6]
Derivative Financial Instruments    
Disclosure Of Financial Instruments [Line Items]    
Financial assets at fair value through profit or loss mandatory 7 8
Financial assets at fair value through OCI mandatory 3 4
Financial assets total carrying value 10 12
Financial assets total fair value $ 10 $ 12
[1] On account of fair value changes including interest accrued
[2] On account of fair value changes including interest accrued
[3] Excludes unbilled revenue on contracts where the right to consideration is dependent on completion of contractual milestones
[4] Excludes unbilled revenue on contracts where the right to consideration is dependent on completion of contractual milestones
[5] Excludes interest accrued on quoted debt securities carried at amortized cost of $10 million
[6] Excludes interest accrued on quoted debt securities carried at amortized cost of $10 million