Subsequent Event (Notes)

12 Months Ended

Dec. 31, 2019

Subsequent Events [Abstract]

Subsequent Events [Text Block]

19. Subsequent Events

On February 7, 2020, the Company announced it had entered into a definitive agreement to acquire the Stericycle Environmental Solutions Business ("ESOL"), an established hazardous waste transportation and processing solutions provider from Stericycle, Inc. Under the terms of the agreement, the Company will acquire ESOL for $462.5 million in cash, subject to post-closing adjustments. The transaction has been approved by the Company's Board and is expected to close by March 31, 2020 subject to customary closing conditions, including regulatory approvals.