Just for clarity purpose...
Bucs paid 2 -1st to acquire R. Bowens , cb (Just couple of days ago)
In this trade we have send those same picks & 2nd round Lions back to Bucs for J.Stoops, RB
There was additional 1st added for R.Swader, LB
Essentially here is the net trade for all of you
Bucs send --> J.Reid, cb , R. Swader, LB, J.Stoops, RB , 6th round 2015
Lions send --> R.Bowens, CB, 2016 5th round , 2017 2nd round, 2018 1st round & 2nd round,
Breaking it further
J.Stoops, RB for R. Bownes, CB & 2018 2nd rd Lions (late pick)
J.Reid,CB for 2017 2nd round Lions (late pick)
2015 - 6th round for 2016 - 5th round
R.Sawder, LB for 2018 1st round Lions (late pick)
In this 2 trades Lions acquired 3 starting players and Bucs acquired 1 starting player and 2 - 2nd and 1 st round...