Doctrine 2 - 2 decimal places on a float?

Both precision and scale properties work only with the decimal mapping type (link). I suggest you use the decimal type.

As to why it's creating a double field instead of float, I'm not entirely sure. It probably has to do with being compatible with all supported databases. I see no mention of double mapping type so I assume they use the same type for both.

in the *.yml

curr_price:
    type: decimal
    precision: 10
    scale: 2