HSBC Holdings Plc, Europe's largest bank, agreed to pay $1.92 billion to settle U.S. probes of money laundering in the largest such accord ever.

The settlement includes a deferred prosecution agreement with the U.S. Department of Justice, the London-based bank said in an e-mailed statement today. HSBC also said it expects to complete an undertaking with the U.K.'s Financial Services Authority soon, without giving details.

Chief Executive Officer Stuart Gulliver's attempts to reduce costs and improve profitability have been hurt by the U.S. probes and by compensation claims from U.K. clients. A Senate committee said in July that lax oversight by top HSBC executives gave terrorists and drug cartels access to the U.S. financial system. The settlement is the biggest reached in the U.S. over such allegations, topping the $619 million in penalties paid in June by the Netherlands' ING Groep NV.