v3.25.2
Property, Plant and Equipment - Schedule of Changes in Carrying Value of Property, Plant and Equipment (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance $ 1,537 $ 1,679 $ 1,793  
Capital work-in-progress 119 54 55 $ 67
Property, plant and equipment, Ending balance 1,497 1,537 1,679  
Gross Carrying Value        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 3,663 3,658 3,876  
Additions 217 212 348  
Additions- Business Combinations (Refer to Note 2.10) 5 0 2  
Deletions* (144) (148) (268)  
Translation difference (85) (59) (300)  
Property, plant and equipment, Ending balance 3,656 3,663 3,658  
Accumulated Depreciation        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance (2,180) (2,034) (2,150)  
Deletions* 128 145 266  
Depreciation (279) (324) (320)  
Translation difference 53 33 170  
Property, plant and equipment, Ending balance (2,278) (2,180) (2,034)  
Land        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 171 174 188  
Additions 6      
Translation difference (4)      
Property, plant and equipment, Ending balance 173 171 174  
Land | Gross Carrying Value        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 171 174 188  
Additions- Business Combinations (Refer to Note 2.10)   0    
Translation difference   (3) (14)  
Property, plant and equipment, Ending balance 173 171 174  
Buildings        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 821 855 940  
Property, plant and equipment, Ending balance 744 821 855  
Buildings | Gross Carrying Value        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 1,411 1,407 1,481  
Additions 5 36 42  
Additions- Business Combinations (Refer to Note 2.10)   0    
Deletions* (13) (7)    
Translation difference (32) (25) (116)  
Property, plant and equipment, Ending balance 1,371 1,411 1,407  
Buildings | Accumulated Depreciation        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance (590) (552) (541)  
Deletions* 2 7    
Depreciation (52) (54) (54)  
Translation difference 13 9 43  
Property, plant and equipment, Ending balance (627) (590) (552)  
Plant and Machinery        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 139 157 169  
Property, plant and equipment, Ending balance 121 139 157  
Plant and Machinery | Gross Carrying Value        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 637 625 653  
Additions 30 40 57  
Additions- Business Combinations (Refer to Note 2.10) 1 0 1  
Deletions* (20) (19) (32)  
Translation difference (16) (9) (54)  
Property, plant and equipment, Ending balance 632 637 625  
Plant and Machinery | Accumulated Depreciation        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance (498) (468) (484)  
Deletions* 18 18 32  
Depreciation (44) (56) (58)  
Translation difference 13 8 42  
Property, plant and equipment, Ending balance (511) (498) (468)  
Computer Equipment        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 267 328 329  
Property, plant and equipment, Ending balance 268 267 328  
Computer Equipment | Gross Carrying Value        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 1,032 1,037 1,125  
Additions 154 112 187  
Additions- Business Combinations (Refer to Note 2.10) 1 0 1  
Deletions* (75) (102) (191)  
Translation difference (24) (15) (85)  
Property, plant and equipment, Ending balance 1,088 1,032 1,037  
Computer Equipment | Accumulated Depreciation        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance (765) (709) (796)  
Deletions* 73 101 190  
Depreciation (148) (167) (164)  
Translation difference 20 10 61  
Property, plant and equipment, Ending balance (820) (765) (709)  
Furniture and Fixtures        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 84 109 99  
Property, plant and equipment, Ending balance 71 84 109  
Furniture and Fixtures | Gross Carrying Value        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 406 409 423  
Additions 22 24 62  
Additions- Business Combinations (Refer to Note 2.10) 3 0    
Deletions* (36) (20) (45)  
Translation difference (9) (7) (31)  
Property, plant and equipment, Ending balance 386 406 409  
Furniture and Fixtures | Accumulated Depreciation        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance (322) (300) (324)  
Deletions* 35 19 44  
Depreciation (35) (47) (44)  
Translation difference 7 6 24  
Property, plant and equipment, Ending balance (315) (322) (300)  
Vehicles        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 1 1 1  
Property, plant and equipment, Ending balance 1 1 1  
Vehicles | Gross Carrying Value        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance 6 6 6  
Additions- Business Combinations (Refer to Note 2.10)   0    
Property, plant and equipment, Ending balance 6 6 6  
Vehicles | Accumulated Depreciation        
Disclosure Of Property Plant And Equipment [Line Items]        
Property, plant and equipment, Beginning balance (5) (5) (5)  
Property, plant and equipment, Ending balance $ (5) $ (5) $ (5)