CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenues	$ 663,319	$ 569,955
Costs and Expenses:
Cost of revenues (exclusive of depreciation shown below)	367,340	301,760
Depreciation - cost of revenues	14,648	12,726
Selling, general and administrative expenses (exclusive of depreciation and amortization shown below)	141,363	112,180
Depreciation – selling, general and administrative expenses	4,118	3,315
Amortization	8,797	7,315
Total Costs and Expenses	536,266	437,296
Income from Operations	127,053	132,659
Other Income (Expense):
Interest income	35	20
Interest expense	(18,633)	(14,918)
Other expense, net	(598)	(700)
Total Other Expense	(19,196)	(15,598)
Income Before Income Taxes	107,857	117,061
Income Tax Expense	32,047	37,291
Net Income	75,810	79,770
Less: Net Income Attributable to Noncontrolling Interests	352	621
Net Income Attributable to Stericycle, Inc.	$ 75,458	$ 79,149
Earnings Per Common Share Attributable to Stericycle, Inc. Common Shareholders:
Basic	$ 0.89	$ 0.93
Diluted	$ 0.87	$ 0.91
Weighted Average Number of Common Shares Outstanding:
Basic	85,037,823	85,270,046
Diluted	86,357,006	86,613,843