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Basis of presentation (Details) - Discontinued Operations, Disposed of by Means Other than Sale, Spinoff - Knife River Corporation shares in Millions | May 31, 2023 shares
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Pro rata distribution of shares, percentage | 0.90
Stock split, conversion ratio | 4
Retained ownership percentage | 0.10
Number of retained shares (in shares) | 5.7

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- Definition Pro Rata Distribution rate of Knife River shares. + References No definition available. + Details
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- Definition Number of shares retained in Knife River + References No definition available. + Details
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- Definition Percentage of shares retained in Knife River + References No definition available. + Details
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- Details
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