v3.25.2
Disposal group held for sale and disposal of subsidiaries - Details of Assets and Liabilities at Date of Disposal (Detail)
₨ in Millions, $ in Millions
 12 Months Ended
Dec. 19, 2024
INR (₨)
Jun. 21, 2024
INR (₨)
Jan. 08, 2024
INR (₨)
Dec. 30, 2023
INR (₨)
Apr. 24, 2023
INR (₨)
Mar. 31, 2025
INR (₨)
Mar. 31, 2024
INR (₨)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
INR (₨)
Mar. 31, 2022
INR (₨)
Assets                      
Property, plant and equipment           ₨ 747,066 ₨ 678,600 $ 8,745      
Right of use assets           14,506 12,898 170   ₨ 10,618  
Trade receivables (refer Note 9)           24,268 21,856 284   30,687  
Bank balances other than cash and cash equivalents           40,099 50,706 469      
Cash and cash equivalents           40,419 27,021 473 $ 316 38,182 ₨ 28,379
Other assets           6,497 6,800 76      
Total assets           959,799 873,935 11,235      
Liabilities                      
Interest-bearing loans and borrowings           582,307 565,861 6,816      
Short term borrowings           140,711 81,455 1,647      
Lease liabilities           8,282 7,477 97   ₨ 5,471  
Provisions           9,484 10,508 111      
Trade payables           8,173 9,094 96      
Deferred government grant - non-current           181 192 2      
Deferred government grant - current           11 11 0      
Others current financial liabilities           34,754 42,571 407      
Others non-current financial liabilities           6,576 7,011 77      
Total liabilities           828,687 752,238 $ 9,700      
ReNew Sun Waves Private Limited                      
Consideration satisfied by:                      
Cash and cash equivalents           (5,196)          
ReNew Sun Waves Private Limited | Disposal by Sale of Subsidiary                      
Liabilities                      
Net assets sold ₨ 2,125                    
Sales consideration 5,196                    
Gain on sale 3,071                    
Consideration satisfied by:                      
Cash and cash equivalents 5,196                    
Climate Connect Digital Limited                      
Consideration satisfied by:                      
Cash and cash equivalents           (4)          
Climate Connect Digital Limited | Disposal by Sale of Subsidiary                      
Liabilities                      
Net assets sold   ₨ (13)                  
Sales consideration   4                  
Gain on sale   17                  
Consideration satisfied by:                      
Cash and cash equivalents   4                  
Renew Solar Urja Private Limited                      
Consideration satisfied by:                      
Cash and cash equivalents             (5,283)        
Renew Solar Urja Private Limited | Disposal by Sale of Subsidiary                      
Liabilities                      
Net assets sold 2,125   ₨ 1,945                
Sales consideration 5,196   5,283                
Gain on sale 3,071   3,338                
Consideration satisfied by:                      
Cash and cash equivalents     5,283                
Vivasvat Solar Energy Private Limited, Izra Solar Energy Private Limited, Abha Sunlight Private Limited, Nokor Bhoomi Private Limited and Nokor Solar Energy Private Limited                      
Consideration satisfied by:                      
Cash and cash equivalents             ₨ (1,801)        
Vivasvat Solar Energy Private Limited, Izra Solar Energy Private Limited, Abha Sunlight Private Limited, Nokor Bhoomi Private Limited and Nokor Solar Energy Private Limited | Disposal by Sale of Subsidiary                      
Liabilities                      
Net assets sold       ₨ 13 ₨ 1,480            
Sales consideration         1,801 ₨ 4          
Gain on sale       ₨ 17 321            
Consideration satisfied by:                      
Cash and cash equivalents         1,801            
Assets at the Date of Disposal [Member] | ReNew Sun Waves Private Limited                      
Assets                      
Property, plant and equipment 11,877                    
Right of use assets 200                    
Trade receivables (refer Note 9) 179                    
Bank balances other than cash and cash equivalents 307                    
Cash and cash equivalents 409                    
Other assets 433                    
Total assets 13,405                    
Assets at the Date of Disposal [Member] | Climate Connect Digital Limited                      
Assets                      
Trade receivables (refer Note 9)   11                  
Cash and cash equivalents   14                  
Other assets   12                  
Total assets   37                  
Assets at the Date of Disposal [Member] | Renew Solar Urja Private Limited                      
Assets                      
Property, plant and equipment     12,183                
Right of use assets     268                
Trade receivables (refer Note 9)     118                
Bank balances other than cash and cash equivalents     999                
Cash and cash equivalents     1,229                
Other assets     1,226                
Total assets     16,023                
Assets at the Date of Disposal [Member] | Vivasvat Solar Energy Private Limited, Izra Solar Energy Private Limited, Abha Sunlight Private Limited, Nokor Bhoomi Private Limited and Nokor Solar Energy Private Limited                      
Assets                      
Property, plant and equipment         4,565            
Right of use assets         151            
Trade receivables (refer Note 9)         143            
Bank balances other than cash and cash equivalents         192            
Cash and cash equivalents         114            
Other assets         63            
Total assets         5,228            
Liabilities at the Date of Disposal [Member] | ReNew Sun Waves Private Limited                      
Liabilities                      
Interest-bearing loans and borrowings 9,854                    
Short term borrowings 849                    
Lease liabilities 207                    
Provisions 61                    
Trade payables 21                    
Other liabilities 288                    
Total liabilities ₨ 11,280                    
Liabilities at the Date of Disposal [Member] | Climate Connect Digital Limited                      
Liabilities                      
Trade payables   50                  
Total liabilities   ₨ 50                  
Liabilities at the Date of Disposal [Member] | Renew Solar Urja Private Limited                      
Liabilities                      
Interest-bearing loans and borrowings     13,235                
Lease liabilities     199                
Provisions     113                
Trade payables     32                
Other liabilities     499                
Total liabilities     ₨ 14,078                
Liabilities at the Date of Disposal [Member] | Vivasvat Solar Energy Private Limited, Izra Solar Energy Private Limited, Abha Sunlight Private Limited, Nokor Bhoomi Private Limited and Nokor Solar Energy Private Limited                      
Liabilities                      
Interest-bearing loans and borrowings         3,521            
Lease liabilities         133            
Provisions         37            
Trade payables         24            
Other liabilities         33            
Total liabilities         ₨ 3,748