CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Revenues	$ 526,525	$ 468,950	$ 1,040,329	$ 929,027
Costs and Expenses:
Cost of revenues (exclusive of depreciation shown below)	276,385	248,832	546,058	493,014
Depreciation - cost of revenues	12,288	10,630	24,325	21,218
Selling, general and administrative expenses (exclusive of depreciation and amortization shown below)	94,845	84,365	185,891	166,280
Depreciation – selling, general and administrative expenses	2,954	2,261	5,763	4,412
Amortization	6,533	5,135	13,175	10,114
Total Costs and Expenses	393,005	351,223	775,212	695,038
Income from Operations	133,520	117,727	265,117	233,989
Other Income (Expense):
Interest income	102	124	269	216
Interest expense	(13,015)	(12,783)	(26,561)	(25,549)
Other expense, net	(545)	490	(1,558)	(68)
Total Other Expense	(13,458)	(12,169)	(27,850)	(25,401)
Income Before Income Taxes	120,062	105,558	237,267	208,588
Income Tax Expense	41,619	37,186	83,602	74,901
Net Income	78,443	68,372	153,665	133,687
Less: Net Income Attributable to Noncontrolling Interests	399	779	1,004	1,237
Net Income Attributable to Stericycle, Inc.	$ 78,044	$ 67,593	$ 152,661	$ 132,450
Earnings Per Common Share Attributable to Stericycle, Inc. Common Shareholders:
Basic	$ 0.91	$ 0.79	$ 1.77	$ 1.56
Diluted	$ 0.89	$ 0.78	$ 1.74	$ 1.53
Weighted Average Number of Common Shares Outstanding:
Basic	86,125,012	85,170,255	86,109,244	84,999,268
Diluted	87,614,953	86,835,615	87,545,641	86,714,407