Employee Benefits - Employee Benefit Costs (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Disclosure Of Defined Benefit Plans [Line Items] | |||
| Employee benefit cost | $ 10,882 | $ 10,165 | $ 9,981 |
| Employee Benefit Cost | |||
| Disclosure Of Defined Benefit Plans [Line Items] | |||
| Salaries and bonus | 10,444 | 9,903 | 9,729 |
| Defined contribution plans | 97 | 80 | 81 |
| Defined benefit plans | 341 | 182 | 171 |
| Employee benefit cost | $ 10,882 | $ 10,165 | $ 9,981 |
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. No definition available.
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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