Coty is world's biggest perfume maker, making scents for the likes of Calvin Klein and Stetson. In a statement, Avon said it wants nothing to do with the offer.

The beauty and fragrance company Coty went public with its offer to buy rival Avon for about $10 billion — that's an offer Avon so far has rejected. And Express Scripts and Medco — two companies that process prescriptions at the drug store — have gotten federal approval for their merger.

U.S. Airways is reportedly interested in a possible merger-type deal with American Airlines' parent company, AMR Corp. One way it is showing its affection? Buying up domain names.

The world's largest commodities trader Glencore has agreed to buy mining giant Xstrata to create a global giant in coal, zinc and copper mining and production.

AT&T has backed out of a deal to buy T-Mobile for $39 billion.

Facing stiff government opposition due to anti-trust claims, AT&T is backing out of what would have been a $39 billion deal

AT&T announced it is giving up its effort to purchase T-Mobile for $39 billion, despite its claims that the move would actually help consumers

The government put up road blocks to the AT&T and T-Mobile merger than eventually led to its demise. What was everyone so afraid of?