Buffett's deal of approval doesn't come cheap

The investing guru’s conglomerate, Berkshire Hathaway Inc., announced a deal on Tuesday, but not the kind Buffett’s fans have been awaiting. Instead of taking over a company, Berkshire is helping one business go after another. It’s investing $10 billion in Occidental Petroleum Corp. to finance the oil producer’s $55 billion acquisition of Anadarko Petroleum Corp. More »