Complex sentence: Lockheed Martin divested a portion of its IS&GS business to Leidos in a $5 billion transaction in early 2016, which included a $1.8 billion one-time special cash payment to Lockheed Martin.
Split into simpler sentences: Lockheed Martin divested a portion of its IS&GS business to Leidos in a $5 billion transaction in early 2016. The transaction included a $1.8 billion one-time special cash payment to Lockheed Martin.