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[Abstract] Accounting Policies Credit Losses [Abstract] All Currencies [Domain] All Currencies [Domain] Common Stock [Member] Common Stock [Member] Other Borrowings Other Borrowings Debt Securities, Available-for-sale Debt Securities, Available-for-Sale Cover [Abstract] Remotely Operated Vehicles [Member] Rovs [Member] ROVs Reclassification, Comparability Adjustment Reclassification, Comparability Adjustment [Policy Text Block] Integrity Managements & Digital Solutions Member Integrity Managements & Digital Solutions Member [Member] Integrity Managements & Digital Solutions Member Non-US [Member] Non-US [Member] Long-Lived Asset, Held and Used, Impairment [Table Text Block] Long-Lived Asset, Held and Used, Impairment [Table Text Block] Subsea Projects [Member] Subsea Projects [Member] Subsea Projects [Member] Subsea Projects [Member] United Kingdom [Member] United Kingdom [Member] UNITED KINGDOM Derivative Contract [Domain] Derivative Contract [Domain] Capitalized Cost, Software to be 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