The DI casts a wide net, lots of money to be had from the credulous. Suffice to say, they readily admit to a Christian religious foundation.
Yet that is just the opinion of those people. VIrtually all religions in the world have some kind of creation account. ID in and of itself, would not favor one over the other. ID is not inherently Christian in nature; it only postulates a creator/designer, something common to all religions.