Other Capital Stock Agreements

6 Months Ended

Jun. 30, 2011

Other Capital Stock Agreements [Abstract]

Stockholders' Equity Note Disclosure

Other Capital Stock Agreements

Common Stock: In March 2010, Lexicon completed the public offering and sale and concurrent private placement of an aggregate of 161,770,206 shares of its common stock at a price of $1.15 per share, resulting in net proceeds of $181.5 million, after deducting underwriting discounts and commissions of $4.3 million and offering expenses of $0.3 million.  Invus, L.P. and its affiliate Invus C.V., Lexicon's largest stockholders, purchased 94,270,206 of these shares.  All of the net proceeds of this offering are reflected as issuance of common stock in the accompanying financial statements.