There’s Text to Columns, using + as a delimiter. That’s probably the quickest way.
Select the data, then go to Data –> Text to Columns. Choose “Delimited”, using a + delimiter. If you want, choose a destination (that’s optional, you can just click “Finish” which will overwrite the current data).
Alternatively, you can use LEFT() and RIGHT().
To get parts left of the +: 
LEFT(A1,SEARCH("+",A1)-1)
and right of the +:
RIGHT(A1,LEN(A1)-SEARCH("+",A1))
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