They're effectively confirming that the discounted future cash...

They're effectively confirming that the discounted future cash flow forecasts (presume they're using a 5 year forecast + terminal value calculation) that dictate the recoverable amount of the cash generating unit is below the carrying value on the books, hence the impairment. This is not a good thing, although probably already reflected in the share price, as it tells me they're going to be making a lot less cash out of these businesses than what was intended when they bought them.