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v3.26.1

Long-term debt - Narrative (Details) - USD ($) | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2026 | Dec. 31, 2025 | Nov. 30, 2025 | Jun. 30, 2024 | Mar. 31, 2021
Debt Instrument [Line Items] |  |  |  |  |
Margin over LIBOR (in percentage) | 1.375% |  |  |  |
Net debt to EBITDA leverage ratio, covenant line of credit | 300.00% |  |  |  |
Interest coverage minimum ratio, covenant line of credit | 300.00% |  |  |  |
Long-term debt, amount | $ 1,180,257,000 | $ 1,542,301,000 |  |  |
Credit facility, net of unamortized debt issuance costs |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt issuance costs, net | 429,000 | 584,000 |  |  |
Long-term debt, amount | 436,821,000 | 449,916,000 |  |  |
Principal amount of term loan | $ 6,625,000 |  |  |  |
2022 Facility | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Term SOFR adjustment (in percentage) | 0.10% |  |  |  |
2022 Facility | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Term SOFR adjustment (in percentage) | 0.00% |  |  |  |
2022 Facility | Line of Credit |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 650,000,000 |  |  |  |
2022 Facility | Credit facility, net of unamortized debt issuance costs |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 530,000,000 |  |  |  |
Amended 2015 Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Margin over LIBOR (in percentage) | 0.20% |  |  |  |
Credit facility, base rate (in percentage) | 0.375% |  |  |  |
1.750% 2021 Senior Notes, net of unamortized debt issuance costs |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, amount | $ 0 | 349,835,000 |  |  |
Interest rate on senior notes (in percentage) | 1.75% |  |  |  |
1.750% 2021 Senior Notes, net of unamortized debt issuance costs | Genpact Luxembourg S.r.l. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  |  |  | $ 350,000,000
Debt issuance costs, net | $ 0 | 165,000 |  |  |
Long-term debt, amount | $ 0 | 349,835,000 |  |  |
Interest rate on senior notes (in percentage) |  |  |  |  | 1.75%
Total debt issuance cost |  |  |  |  | $ 3,032,000
Debt instrument redemption price (in percentage) | 100.00% |  |  |  |
Debt repurchase price as percentage of aggregate principal value upon certain change of controls (in percentage) | 101.00% |  |  |  |
6.000% 2024 Senior Notes, net of unamortized debt issuance costs |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, amount | $ 397,429,000 | 396,994,000 |  |  |
Interest rate on senior notes (in percentage) | 6.00% |  |  |  |
6.000% 2024 Senior Notes, net of unamortized debt issuance costs | Genpact Luxembourg and Genpact USA |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 400,000,000 |
Debt issuance costs, net | $ 2,571,000 | 3,005,000 |  |  |
Long-term debt, amount | 397,429,000 | 396,994,000 |  |  |
Interest rate on senior notes (in percentage) |  |  |  | 6.00% |
Total debt issuance cost |  |  |  | $ 4,395,000 |
4.950% 2025 Senior Notes, net of unamortized debt issuance costs |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, amount | $ 346,007,000 | 345,556,000 |  |  |
Interest rate on senior notes (in percentage) | 4.95% |  |  |  |
4.950% 2025 Senior Notes, net of unamortized debt issuance costs | Genpact Luxembourg and Genpact USA |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  | $ 350,000 |  |
Debt issuance costs, net | $ 3,993,000 | 4,444,000 |  |  |
Long-term debt, amount | $ 346,007,000 | $ 345,556,000 |  |  |
Interest rate on senior notes (in percentage) |  |  | 4.95% |  |
Total debt issuance cost |  |  | $ 4,551,000 |  |

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