As of today, most of the symfony documentation is available as PDF files.
The PDF files are available for all major symfony versions. You can download the Jobeet tutorial for Propel or Doctrine, the Forms book, or the Cookbook. Tutorials are also available like the "What's new?" tutorial for symfony 1.2. Even the good old askeet tutorial has been converted to PDF.
For symfony 1.2, the PDF files represent more than 1300 pages of documentation!
The PDFs will be always up-to-date with the latest version of the documentation as they are re-generated each night.