Need to get data in 11.2.0.1 EE into 18c EE on 64 bit linux

Need to get data in 11.2.0.1 EE into 18c EE on 64 bit linux.  Am thinking that an expdp appears to be cleanest method.  Looking for a DocID that illustrates expdp params (FILESIZE=?) for the data I want to expdp from 11.2.0.1 EE into 18c EE.  Also, syntax for imdmp into 18c (FILESIZE=?) for the 11.2.0.1 dmp file).

Have not yet found a metalink doc that says I can export my user data from 11.2.0.1 and import directly into 18c.   Can kind soul share one?  Have read 286775.1.  The 18c db upgrade doc states I have to wash my 11.2.0.1 data thru an 11.2.0.4 instance before moving into 18c (indirect upgrade using dbua?).  Wondering if it can be done via a simple export (11.2.0.1 -> 18c)?