E.W. Scripps Co. plans to split into two parts, one incorporating its fast-growing lifestyle network and the other its more traditional media. Scripps plans to spin off Scripps Networks into a new company - Scripps Networks Interactive, which will include its cable and satellite networks. Scripps' cable networks generate more than half of the company's revenue and most of the company's profit growth. The Chief Executive Kenneth W. Lowe is of opinion that the split will promote a sharpened strategic focus. Investors have been anxious for Scripps to split up.