CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 13.1	$ 11.3
Other comprehensive (loss) income:
Currency translation adjustments	(11.5)	7.9
Total other comprehensive (loss) income	(11.5)	7.9
Comprehensive income	1.6	19.2
Less: comprehensive income (loss) attributable to noncontrolling interests	0.0	(2.2)
Comprehensive income attributable to Stericycle, Inc. common shareholders	$ 1.6	$ 21.4