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Other Capital Agreements	9 Months Ended
Other Capital Agreements	Sep. 30, 2023
Equity [Abstract]
Other Capital Agreements	Other Capital Agreements Common Stock: In June 2023, Lexicon sold an aggregate of 55,288,460 shares of its common stock at a price of $2.60 per share in a public offering and concurrent private placement to an affiliate of Invus, L.P., resulting in net proceeds of approximately $139 million, after deducting underwriting discounts and commissions and offering expenses.