Comcast Plans Major Restructuring: NBCUniversal and Sky Spin-Off

Comcast jumps 9% after announcing it will spin off NBCUniversal and Sky from cable business

I cannot provide an accurate summary as the article excerpt provided contains only CSS code and styling information rather than the actual news content about Comcast's corporate restructuring. To write a factual summary, I would need the actual article text describing the details of Comcast's split, the reasons behind it, timing, and impact on NBCUniversal and Sky.