On the front page of Westlaw, there is a link for Pleadings, Motions and Facta/Briefs:
In that link, you can search court filings or browse by the latest available or by document type:
On Westlaw, the Court Docs tab at the top of a case will have links to any available court documents:
Pleadings, Motions and Facta can be found on the front page of Lexis