CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues	$ 480,484	$ 420,924	$ 1,409,511	$ 1,229,491
Costs and Expenses:
Cost of revenues (exclusive of depreciation shown below)	253,526	220,419	746,540	639,827
Depreciation - cost of revenues	11,404	10,450	32,622	30,438
Selling, general and administrative expenses (exclusive of depreciation and amortization shown below)	92,966	79,006	259,246	232,750
Depreciation - SG&A	2,480	2,274	6,892	6,447
Amortization	5,561	4,209	15,675	11,102
Total Costs and Expenses	365,937	316,358	1,060,975	920,564
Income from Operations	114,547	104,566	348,536	308,927
Other Income (Expense):
Interest income	117	237	333	484
Interest expense	(13,048)	(12,034)	(38,597)	(36,413)
Other income/ (expense), net	(488)	(577)	(556)	(1,659)
Total Other Expense	(13,419)	(12,374)	(38,820)	(37,588)
Income Before Income Taxes	101,128	92,192	309,716	271,339
Income Tax Expense	35,382	32,448	110,283	99,119
Net Income	65,746	59,744	199,433	172,220
Less: Net Income Attributable to Noncontrolling Interests	269	497	1,506	1,757
Net income attributable to Stericycle, Inc.	65,477	59,247	197,927	170,463
Earnings Per Common Share Attributable to Stericycle, Inc. Common Shareholders:
Basic	$ 0.76	$ 0.69	$ 2.32	$ 1.99
Diluted	$ 0.75	$ 0.68	$ 2.28	$ 1.95
Weighted Average Number of Common Shares Outstanding:
Basic	85,748,998	85,564,682	85,251,002	85,654,097
Diluted	87,305,779	87,385,121	86,911,229	87,620,867
Comprehensive Income	82,452	24,195	204,415	154,635
Less: Comprehensive (Loss)/ Income Attributable to Noncontrolling Interests	841	(2,469)	2,106	173
Comprehensive Income Attributable to Stericycle, Inc.	$ 81,611	$ 26,664	$ 202,309	$ 154,462