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Revenue - Schedule of Disaggregation of Revenues (Detail) - INR (₨) ₨ in Millions | 12 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | ₨ 610,232 | ₨ 585,845
Fixed-price contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 369,334 | 349,985
Time-and-materials contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 229,216 | 221,316
India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 30,215 | 30,999
Americas [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 350,427 | 323,659
Europe [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 144,072 | 146,190
Rest of the World [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 85,518 | 84,997
IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 590,589 | 563,336
IT services [member] | Fixed-price contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 362,919 | 343,809
IT services [member] | Time-and-materials contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 227,670 | 219,527
IT services [member] | India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 15,579 | 14,880
IT services [member] | Americas [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 349,509 | 321,547
IT services [member] | Europe [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 141,682 | 143,950
IT services [member] | Rest of the World [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 83,819 | 82,959
IT Products [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 11,682 | 14,544
IT Products [member] | India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 6,675 | 8,154
IT Products [member] | Americas [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 918 | 2,112
IT Products [member] | Europe [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 2,390 | 2,240
IT Products [member] | Rest of the World [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 1,699 | 2,038
India State Run Enterprise (ISRE) [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 7,961 | 7,965
India State Run Enterprise (ISRE) [member] | Fixed-price contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 6,415 | 6,176
India State Run Enterprise (ISRE) [member] | Time-and-materials contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 1,546 | 1,789
India State Run Enterprise (ISRE) [member] | India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 7,961 | 7,965
Rendering of Services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 598,550 | 571,301
Rendering of Services [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 590,589 | 563,336
Rendering of Services [member] | India State Run Enterprise (ISRE) [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 7,961 | 7,965
Sales of Products [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 11,682 | 14,544
Sales of Products [member] | IT Products [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 11,682 | 14,544
Products [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 11,682 | 14,544
Products [member] | IT Products [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 11,682 | 14,544
Banking Financial Services and Insurance (BFSI) [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 183,368 | 173,516
Banking Financial Services and Insurance (BFSI) [member] | IT services [member] | Fixed-price contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 101,875 | 89,378
Banking Financial Services and Insurance (BFSI) [member] | IT services [member] | Time-and-materials contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 81,493 | 84,138
Banking Financial Services and Insurance (BFSI) [member] | IT services [member] | India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 5,241 | 3,868
Banking Financial Services and Insurance (BFSI) [member] | IT services [member] | Americas [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 107,467 | 98,428
Banking Financial Services and Insurance (BFSI) [member] | IT services [member] | Europe [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 45,067 | 46,856
Banking Financial Services and Insurance (BFSI) [member] | IT services [member] | Rest of the World [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 25,593 | 24,364
Banking Financial Services and Insurance (BFSI) [member] | Rendering of Services [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 183,368 | 173,516
Healthcare and Lifesciences (Health BU) [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 77,794 | 73,942
Healthcare and Lifesciences (Health BU) [member] | IT services [member] | Fixed-price contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 49,951 | 53,462
Healthcare and Lifesciences (Health BU) [member] | IT services [member] | Time-and-materials contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 27,843 | 20,480
Healthcare and Lifesciences (Health BU) [member] | IT services [member] | India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 2,522 | 2,295
Healthcare and Lifesciences (Health BU) [member] | IT services [member] | Americas [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 60,245 | 57,204
Healthcare and Lifesciences (Health BU) [member] | IT services [member] | Europe [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 7,540 | 7,591
Healthcare and Lifesciences (Health BU) [member] | IT services [member] | Rest of the World [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 7,487 | 6,852
Healthcare and Lifesciences (Health BU) [member] | Rendering of Services [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 77,794 | 73,942
Consumer Business Unit (CBU) [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 96,509 | 88,797
Consumer Business Unit (CBU) [member] | IT services [member] | Fixed-price contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 53,575 | 50,425
Consumer Business Unit (CBU) [member] | IT services [member] | Time-and-materials contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 42,934 | 38,372
Consumer Business Unit (CBU) [member] | IT services [member] | India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 1,025 | 1,006
Consumer Business Unit (CBU) [member] | IT services [member] | Americas [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 67,988 | 59,262
Consumer Business Unit (CBU) [member] | IT services [member] | Europe [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 17,275 | 17,636
Consumer Business Unit (CBU) [member] | IT services [member] | Rest of the World [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 10,221 | 10,893
Consumer Business Unit (CBU) [member] | Rendering of Services [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 96,509 | 88,797
Energy, Natural Resources and Utilities (ENU) [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 75,958 | 72,329
Energy, Natural Resources and Utilities (ENU) [member] | IT services [member] | Fixed-price contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 52,084 | 51,799
Energy, Natural Resources and Utilities (ENU) [member] | IT services [member] | Time-and-materials contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 23,874 | 20,530
Energy, Natural Resources and Utilities (ENU) [member] | IT services [member] | India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 1,832 | 1,690
Energy, Natural Resources and Utilities (ENU) [member] | IT services [member] | Americas [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 24,315 | 22,739
Energy, Natural Resources and Utilities (ENU) [member] | IT services [member] | Europe [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 31,090 | 29,795
Energy, Natural Resources and Utilities (ENU) [member] | IT services [member] | Rest of the World [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 18,721 | 18,105
Energy, Natural Resources and Utilities (ENU) [member] | Rendering of Services [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 75,958 | 72,329
Technology segment [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 75,446 | 76,108
Technology segment [member] | IT services [member] | Fixed-price contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 49,733 | 47,055
Technology segment [member] | IT services [member] | Time-and-materials contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 25,713 | 29,053
Technology segment [member] | IT services [member] | India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 942 | 1,392
Technology segment [member] | IT services [member] | Americas [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 57,092 | 54,679
Technology segment [member] | IT services [member] | Europe [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 14,107 | 16,441
Technology segment [member] | IT services [member] | Rest of the World [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 3,305 | 3,596
Technology segment [member] | Rendering of Services [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 75,446 | 76,108
Manufacturing Segment [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 47,859 | 46,155
Manufacturing Segment [member] | IT services [member] | Fixed-price contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 33,793 | 31,843
Manufacturing Segment [member] | IT services [member] | Time-and-materials contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 14,066 | 14,312
Manufacturing Segment [member] | IT services [member] | India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 1,908 | 1,534
Manufacturing Segment [member] | IT services [member] | Americas [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 23,327 | 21,541
Manufacturing Segment [member] | IT services [member] | Europe [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 18,547 | 18,211
Manufacturing Segment [member] | IT services [member] | Rest of the World [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 4,077 | 4,869
Manufacturing Segment [member] | Rendering of Services [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 47,859 | 46,155
Communications (COMM) [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 33,655 | 32,489
Communications (COMM) [member] | IT services [member] | Fixed-price contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 21,908 | 19,847
Communications (COMM) [member] | IT services [member] | Time-and-materials contracts [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 11,747 | 12,642
Communications (COMM) [member] | IT services [member] | India [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 2,109 | 3,095
Communications (COMM) [member] | IT services [member] | Americas [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 9,075 | 7,694
Communications (COMM) [member] | IT services [member] | Europe [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 8,056 | 7,420
Communications (COMM) [member] | IT services [member] | Rest of the World [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | 14,415 | 14,280
Communications (COMM) [member] | Rendering of Services [member] | IT services [member] |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |
Revenue | ₨ 33,655 | ₨ 32,489

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