Investments - (Tables)

12 Months Ended

Mar. 31, 2024

Disclosure Of Investments Other Than Investments Accounted For Using Equity Method [Abstract]

Schedule of Carrying Value of Investments

The carrying value of investments are as follows:


(Dollars in millions)
		As of
		March 31, 2024				March 31, 2023
Current investments
Amortized cost:
Quoted debt securities			—				18

Fair value through profit and loss:
Liquid mutual funds		313				119

Fair Value through Other comprehensive income:
Quoted debt securities		291				179
Certificates of deposit			365				435
Commercial Paper			579				90
			1,548				841
Non-Current investments
Amortized cost:
Quoted debt securities		211				215

Fair value through Other comprehensive income:
Quoted debt securities			1,093				1,221
Quoted equity securities			14				—
Unquoted equity and preference securities		11				24

Fair value through profit and loss:
Target maturity fund units			51				49
Others		24				21
			1,404				1,530
Total Investments			2,952				2,371
Investment carried at amortized cost			211				233
Investments carried at fair value through other comprehensive income			2,353				1,949
Investments carried at fair value through profit and loss			388				189

Note: Uncalled capital commitments outstanding as of March 31, 2024, and March 31, 2023, was $9 million and $11 million, respectively.

Schedule of Amounts Recorded in Other Comprehensive Income

Details of amounts recorded in other comprehensive income:


(Dollars in millions)
Net gain / (loss) on		Year ended March 31, 2024
		Gross				Tax				Net
Quoted debt securities			19				(2	)			17
Equity and preference securities			1				1				2


(Dollars in millions)
Net gain / (loss) on		Year ended March 31, 2023
		Gross				Tax				Net
Quoted debt securities			(31	)			1				(30	)
Equity and preference securities			(3	)			–				(3	)


(Dollars in millions)
Net gain / (loss) on		Year ended March 31, 2022
		Gross				Tax				Net
Quoted debt securities			(9	)			3				(6	)
Equity and preference securities			15				(3	)			12

Schedule of Method of Fair Valuation

Method of fair valuation:


(Dollars in millions)
				Fair value
				As of March 31
Class of investment		Method		2024				2023
Liquid mutual funds- carried at Fair value through profit or loss		Quoted price			313				119
Target maturity fund units- carried at Fair value through profit or loss		Quoted price			51				49
Quoted debt securities- carried at amortized cost		Quoted price and market observable inputs			236				261
Quoted debt securities- carried at Fair value through other comprehensive income		Quoted price and market observable inputs			1,384				1,400
Commercial Paper- carried at Fair value through other comprehensive income		Market observable inputs			579				90
Certificate of deposits- carried at Fair value through other comprehensive income		Market observable inputs			365				435
Unquoted equity and preference securities- carried at fair value through other comprehensive income		Discounted cash flows method, Market multiples method, Option pricing model			11				24
Quoted equity securities - carried at fair value through other comprehensive income		Quoted price			14				—
Others - carried at fair value through profit or loss		Discounted cash flows method, Market multiples method, Option pricing model			24				21
					2,977				2,399

Note: Certain quoted investments are classified as Level 2 in the absence of active market for such investments.