Employee Benefits - Re-measurements Of Net Defined Benefit Liability - Assets (Details) - USD ($)
$ in Millions

12 Months Ended

Mar. 31, 2025

Mar. 31, 2024

Mar. 31, 2023

Re-measurements of the net defined benefit liability / (asset)

Total

^[1]

$ 11

$ (15)

$ (4)

Gratuity

Re-measurements of the net defined benefit liability / (asset)

Actuarial (gains) / losses

12

4

(9)

(Return) / loss on plan assets excluding amounts included in the net interest on the net defined benefit liability / (asset)

(2)

(2)

(4)

Total

10

2

(13)

Pension

Re-measurements of the net defined benefit liability / (asset)

Actuarial (gains) / losses

8

3

(17)

(Return) / loss on plan assets excluding amounts included in the net interest on the net defined benefit liability / (asset)

(7)

(2)

11

Total

1

1

(6)

Provident Fund

Re-measurements of the net defined benefit liability / (asset)

Actuarial (gains) / losses

26

12

(10)

(Return) / loss on plan assets excluding amounts included in the net interest on the net defined benefit liability / (asset)

(29)

(28)

23

Irrecoverable surplus - effect of asset ceiling

7

Total

$ 4

$ (16)

$ 13

[1]	net of taxes