SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Parenthetical) (Details) $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($)
Valuation And Qualifying Accounts [Abstract]
Valuation allowances and reserves, related to divestitures	$ 4.1

Valuation allowances and reserves, related to divestitures.

No definition available.

Name:	srcl_ValuationAllowancesAndReservesRelatedToDivestitures
Namespace Prefix:	srcl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration