Read through the additional details, predictions and pontifications beyond the fact Irish drugmaker Warner Chilcott purchased Procter & Gamble’s prescription drug unit for $3.1 billion.

P & G is selling a pharmaceutical line that had revenue of $2.3 billion last year and net income of approximately $540 million for the year ended June 30. But the economic landscape was much different when the company launched a segment away from its consumer products holdings.

Drug companies are beginning to base the prices of their products on how well they improve patients’ health. Health insurer CIGNA and drug maker Merck announce the latest agreement. Last week, it was Proctor & Gamble and Sanofi-Aventis.

Susan Arnold is stepping down today as president of Procter & Gamble’s global business unit and will retire from the Cincinnati consumer products company on Sept. 1. Arnold was P&G’s first woman vice chair and president, as well as leader of its global business unit.