Business combination - Narrative (Details) - USD ($) shares in Millions, $ in Millions |
2 Months Ended | 3 Months Ended | 12 Months Ended | ||
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Aug. 03, 2026 |
Sep. 30, 2026 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Jun. 30, 2026 |
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| Business Combination [Line Items] | |||||
| Replacement equity awards – Mirantis acquisition | $ 502 | $ 0 | |||
| Mirantis, Inc. | |||||
| Business Combination [Line Items] | |||||
| Business acquired (as a percent) | 100.00% | ||||
| Total consideration | $ 538 | ||||
| Ordinary shares (in shares) | 12.6 | ||||
| Replacement equity awards – Mirantis acquisition | $ 502 | ||||
| Payments acquired in cash | 8 | ||||
| Exchange for vested equity awards | $ 24 | ||||
| Acquisition-related cost | $ 6 | $ 2 | |||
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- Definition Business Combination, Consideration Transferred, Replacement Restricted Stock Units No definition available.
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- Definition Number of shares of equity interest issued or issuable by acquirer as part of consideration transferred in business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- 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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Percentage of voting equity interest acquired in business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of expense for acquisition-related cost incurred to effect business combination. Includes, but is not limited to, finder's fee; advisory, legal, accounting, valuation, and other professional and consulting fees; and general administrative cost, including cost of maintaining internal acquisition department. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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