Oracle SQL Schema and Text Index Size

I recently had to determine the size of my schema and the size of the text indexes used in that schema. These SQL statements got me the results:

SQL> select sum(bytes) from dba_segments where owner='SCHEMA_NAME' and SEGMENT_NAME like '%$%';

SUM(BYTES)
----------
6663307264

SQL> select sum(bytes) from dba_segments where owner='SCHEMA_NAME';

SUM(BYTES)
----------
9464446976