XML 135 R123.htm IDEA: XBRL DOCUMENT v3.8.0.1
Income Taxes - Movement in Deferred Tax Assets and Liabilities (Detail) - INR (₨)
₨ in Millions
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance ₨ (3,516) ₨ (822) ₨ (295)
Credit/(charge) in the consolidated statement of Changes in equity on adoption of IFRS 9     430
Credit/(charge) in the consolidated statement of income 3,944 1,288 391
Credit/(charge) in the Other comprehensive income 1,573 (1,218) 795
On account of business combination (113) (2,764) (2,143)
Assets held for sale 1,961    
Ending balance 3,849 (3,516) (822)
Carry-forward losses [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 5,513 5,250 3,589
Credit/(charge) in the consolidated statement of income 133 825 147
Credit/(charge) in the Other comprehensive income 48 (562) (90)
On account of business combination     1,604
Ending balance 5,694 5,513 5,250
Accrued expenses and liabilities [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 3,151 3,270 2,546
Credit/(charge) in the consolidated statement of income 243 (44) 500
Credit/(charge) in the Other comprehensive income (246) (75) 224
Assets held for sale (41)    
Ending balance 3,107 3,151 3,270
Allowances for lifetime expected credit loss [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 2,955 3,039 1,859
Credit/(charge) in the consolidated statement of Changes in equity on adoption of IFRS 9     430
Credit/(charge) in the consolidated statement of income 1,564 (77) 751
Credit/(charge) in the Other comprehensive income 2 (7) (1)
Assets held for sale (22)    
Ending balance 4,499 2,955 3,039
Minimum alternate tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 1,520 1,457 1,844
Credit/(charge) in the consolidated statement of income (1,446) 63 (387)
Ending balance 74 1,520 1,457
Property, plant and equipment [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (4,153) (4,262) (3,416)
Credit/(charge) in the consolidated statement of income 912 (249) (827)
Credit/(charge) in the Other comprehensive income (75) 358 (19)
Assets held for sale 1,150    
Ending balance (2,166) (4,153) (4,262)
Amortizable goodwill [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (4,057) (3,963) (3,347)
Credit/(charge) in the consolidated statement of income 1,522 (401) (977)
Credit/(charge) in the Other comprehensive income (53) 307 361
Assets held for sale 778    
Ending balance (1,810) (4,057) (3,963)
Intangible assets [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (4,511) (4,665) (1,965)
Credit/(charge) in the consolidated statement of income 1,546 2,639 989
Credit/(charge) in the Other comprehensive income (112) 279 58
On account of business combination (113) (2,764) (3,747)
Ending balance (3,190) (4,511) (4,665)
Interest on bonds and fair value movement of investments [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (2,245) (814) (448)
Credit/(charge) in the consolidated statement of income (112) (837) (324)
Credit/(charge) in the Other comprehensive income 645 (594) (42)
Ending balance (1,712) (2,245) (814)
Cash flow hedges [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (1,419) (458) (719)
Credit/(charge) in the consolidated statement of income     1
Credit/(charge) in the Other comprehensive income 1,448 (961) 260
Ending balance 29 (1,419) (458)
Deferred revenue [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (183) (4) (418)
Credit/(charge) in the consolidated statement of income (35) (192) 377
Credit/(charge) in the Other comprehensive income (9) 13 37
Assets held for sale (46)    
Ending balance (273) (183) (4)
Others [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (87) 328 180
Credit/(charge) in the consolidated statement of income (383) (439) 141
Credit/(charge) in the Other comprehensive income (75) 24 7
Assets held for sale 142    
Ending balance ₨ (403) ₨ (87) ₨ 328