v3.25.2
Goodwill And Intangible Assets - Summary of Changes In Carrying Amount of Acquired Intangible Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance $ 167 $ 213 $ 225
Intangible assets gross, Ending balance 323 167 213
Gross Carrying Value      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance 574 570 525
Additions during the period 17 9 8
Acquisition through business combination (Refer Note 2.10) 232   41
Translation differences (1) (5) (4)
Intangible assets gross, Ending balance 822 574 570
Accumulated Depreciation      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance (407) (357) (300)
Amortization expense (91) (52) (60)
Translation differences (1) 2 3
Intangible assets gross, Ending balance (499) (407) (357)
Customer related      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance 85 111 105
Intangible assets gross, Ending balance $ 235 $ 85 $ 111
Customer related | Bottom of Range      
Disclosure Of Intangible Assets [Line Items]      
Estimated Useful Life (in years) 1 year 1 year 1 year
Estimated Remaining Useful Life (in years) 1 year 1 year 1 year
Customer related | Top of Range      
Disclosure Of Intangible Assets [Line Items]      
Estimated Useful Life (in years) 15 years 15 years 15 years
Estimated Remaining Useful Life (in years) 9 years 10 years 11 years
Customer related | Gross Carrying Value      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance $ 304 $ 307 $ 274
Acquisition through business combination (Refer Note 2.10) 212   34
Translation differences   (3) (1)
Intangible assets gross, Ending balance 516 304 307
Customer related | Accumulated Depreciation      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance (219) (196) (169)
Amortization expense (62) (24) (29)
Translation differences   1 2
Intangible assets gross, Ending balance (281) (219) (196)
Software related      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance 41 42 46
Intangible assets gross, Ending balance $ 48 $ 41 $ 42
Software related | Bottom of Range      
Disclosure Of Intangible Assets [Line Items]      
Estimated Useful Life (in years) 3 years 3 years 3 years
Estimated Remaining Useful Life (in years) 1 year 1 year 1 year
Software related | Top of Range      
Disclosure Of Intangible Assets [Line Items]      
Estimated Useful Life (in years) 10 years 10 years 10 years
Estimated Remaining Useful Life (in years) 4 years 5 years 6 years
Software related | Gross Carrying Value      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance $ 134 $ 127 $ 121
Additions during the period 17 9 8
Translation differences   (2) (2)
Intangible assets gross, Ending balance 151 134 127
Software related | Accumulated Depreciation      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance (93) (85) (75)
Amortization expense (10) (9) (10)
Translation differences   1 0
Intangible assets gross, Ending balance (103) (93) (85)
Marketing Related      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance 14 18 21
Intangible assets gross, Ending balance $ 26 $ 14 $ 18
Marketing Related | Bottom of Range      
Disclosure Of Intangible Assets [Line Items]      
Estimated Useful Life (in years) 3 years 3 years 3 years
Estimated Remaining Useful Life (in years) 1 year 1 year 1 year
Marketing Related | Top of Range      
Disclosure Of Intangible Assets [Line Items]      
Estimated Useful Life (in years) 10 years 10 years 10 years
Estimated Remaining Useful Life (in years) 6 years 6 years 7 years
Marketing Related | Gross Carrying Value      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance $ 42 $ 42 $ 40
Acquisition through business combination (Refer Note 2.10) 20   3
Translation differences (1) 0 (1)
Intangible assets gross, Ending balance 61 42 42
Marketing Related | Accumulated Depreciation      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance (28) (24) (19)
Amortization expense (6) (4) (6)
Translation differences (1) 0 1
Intangible assets gross, Ending balance (35) (28) (24)
Others      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance 27 42 53
Intangible assets gross, Ending balance $ 14 $ 27 $ 42
Others | Bottom of Range      
Disclosure Of Intangible Assets [Line Items]      
Estimated Useful Life (in years) 3 years 3 years 3 years
Estimated Remaining Useful Life (in years) 1 year 1 year 1 year
Others | Top of Range      
Disclosure Of Intangible Assets [Line Items]      
Estimated Useful Life (in years) 7 years 7 years 7 years
Estimated Remaining Useful Life (in years) 3 years 4 years 5 years
Others | Gross Carrying Value      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance $ 94 $ 94 $ 90
Acquisition through business combination (Refer Note 2.10)     4
Translation differences   0  
Intangible assets gross, Ending balance 94 94 94
Others | Accumulated Depreciation      
Disclosure Of Intangible Assets [Line Items]      
Intangible assets gross, Beginning balance (67) (52) (37)
Amortization expense (13) (15) (15)
Translation differences   0 0
Intangible assets gross, Ending balance $ (80) $ (67) $ (52)