Significant Accounting Policies - Foreign Currency Translation (Details) $ in Millions, in Billions	Mar. 31, 2018 VEF ( )	Mar. 31, 2018 USD ($)
Foreign Currency Translation
Maximum balance of company's net monetary assets in Venezuelan bolivars \|	20
Exchange rate established by Venezuelan government from bolivars to dollars - DICOM2	49,000	49,000
Accumulated other comprehensive loss that 3M Company has recorded from its Venezuelan subsidiary \| $		$ 145

In March 2016, the Venezuelan government effected a replacement of its SIMADI rate with Tipo de Cambrio Complementario (DICOM2), published by the Venezuelan Central Bank and described as fluctuating in rate based on supply and demand.

No definition available.

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