By the numbers: One state's billion-plus doses of opioids

• The report also found that the three companies — McKesson, AmerisourceBergen, and Cardinal Health — had vastly different processes for reporting suspicious orders.
• At the same time, the Drug Enforcement Agency was relatively lax. It didn't use its most powerful enforcement power even once in that period.

The impact: McCaskill's report doesn't accuse any of the companies of illegal action, but several lawsuits do. If it's found that drugmakers and distributors broke the law, they could be on the hook for hundreds of billions of dollars.