Accounts Receivable - Schedule of accounts receivable (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|---|---|---|---|---|
| Loans and Leases Receivable Disclosure [Line Items] | ||||
| Allowance for credit losses — third parties | $ (7) | $ (7) | $ (7) | $ (5) |
| Third Parties | ||||
| Loans and Leases Receivable Disclosure [Line Items] | ||||
| Trade accounts receivable | 2,330 | 1,964 | ||
| Other accounts receivable | 215 | 116 | ||
| Accounts receivable — third parties | 2,545 | 2,080 | ||
| Allowance for credit losses — third parties | (7) | (7) | ||
| Accounts receivable, net — third parties | 2,538 | 2,073 | ||
| Related Parties | ||||
| Loans and Leases Receivable Disclosure [Line Items] | ||||
| Accounts receivable, net — third parties | $ 197 | $ 136 |
| X | ||||||||||
- Definition Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer. No definition available.
|
| X | ||||||||||
- Definition Fair value portion of amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount, before allowance, of receivables classified as other, due within one year or the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|