GOODWILL AND INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Goodwill, Net

The changes in goodwill for the three months ended March 31, 2012 and for the year ended December 31, 2011 are as follows:

	March 31, 2012		December 31, 2011
Balance at beginning of period	$	5,795,765	$	5,101,938
Goodwill acquired during the period	28,144		701,087
Increase (decrease) related to foreign currency translation	11,166		(7,260		)
Balance at end of period	$	5,835,075	$	5,795,765

Intangible Assets Excluding Goodwill

Intangible assets at March 31, 2012 and December 31, 2011 consisted of the following:

	Weighted Average Amortization Period	March 31, 2012							December 31, 2011
		Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Amortizing intangible assets:
Customer-related intangibles	19 years	$	650,070	$	(201,986	)	$	448,084	$	630,671	$	(193,131	)	$	437,540
Non-compete agreements	4 years	46,176		(17,356		)	28,820		45,798		(14,633		)	31,165
Technology	14 years	167,708		(32,109		)	135,599		165,113		(27,929		)	137,184
Other	8 years	149,799		(29,110		)	120,689		146,613		(23,552		)	123,061
Total	16 years	1,013,753		(280,561		)	733,192		988,195		(259,245		)	728,950
Intangible assets not subject to amortization:
Tradenames		302,892		—			302,892		300,648		—			300,648
In-process research and development		4,270		—			4,270		5,250		—			5,250
Other		1,159		—			1,159		764		—			764
Total intangible assets		$	1,322,074	$	(280,561	)	$	1,041,513	$	1,294,857	$	(259,245	)	$	1,035,612

Future Amortization Expense Intangible Assets

The estimated amortization expense related to amortizable intangible assets for each of the five succeeding fiscal years and thereafter as of March 31, 2012 is as follows:

Fiscal Year Ending December 31,
Remainder of 2012	$	59,857
2013	78,205
2014	75,850
2015	64,487
2016	57,777
2017	53,187
Thereafter	343,829
Total	$	733,192