Pulling Account Entry Details from GL_JE_Lines

Hello,

Note: We are using 11i

I'm trying to pull account details of journal entries entered into the GL for specific business units.  In our structure, Segment 1 in the chart of accounts is a business unit identifier.  When I searched the GL_JE_Lines table, I could not find the account (segment) numbers.  Rather, the only field that I could link between the chart of accounts and GL_JE_Lines is the 'Code_Combination_ID' field.  I can join the tables, however I was wondering if there is another table I should be searching that would already have the account (segment) numbers.  Any help is greatly appreciated.  Thanks in advance!