This excerpt taken from the C 10-Q filed Oct 31, 2008.
Lehman Brothers Holding, Inc. Bankruptcy
On September 15, 2008, Lehman Brothers Holding, Inc. ("LBHI", and, together with its subsidiaries, "Lehman") filed for Chapter 11 bankruptcy in U.S. Federal Court. A number of LBHI subsidiaries have subsequently filed bankruptcy or similar insolvency proceedings in the U.S. and other jurisdictions. Lehman's bankruptcy caused Citigroup to terminate cash management and foreign exchange clearance arrangements, close out approximately 40,000 Lehman foreign exchange, derivative and other transactions and quantify other exposures. Citigroup expects to file claims in the relevant Lehman bankruptcy proceedings, as appropriate. Citigroup's net exposure, after application of available collateral and offsets, is expected to be modest.
The following tables present net income (loss) and revenues for Citigroup's businesses on a segment view and on a regional view: