SUPPLEMENTAL CASH FLOW AND OTHER DATA

6 Months Ended

Jun. 30, 2011

Supplemental Cash Flow & Other Data [Abstract]

Supplemental cash flow and other data

11.SUPPLEMENTAL CASH FLOW & OTHER DATA

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2011	2010	2011	2010
Depreciation expense	$       54,127	$       53,704	$     107,643	$     107,678
Interest expense	(47,231)	(36,640)	(85,510)	(73,170)
Interest income	650	273	1,000	848
Interest expense, net	(46,581)	(36,367)	(84,510)	(72,322)
Interest paid	17,539	21,103	72,583	56,415
Income taxes paid	97,119	190,289	107,721	197,118
Assets acquired under capital leases	1,876	-	2,697	-
Businesses acquired:
Fair value of assets acquired	1,555,444	-	1,555,444	-
Fair value of liabilities assumed	148,192	-	148,192	-
Fair value of net assets acquired	1,407,252	-	1,407,252	-
Less: Merger consideration payable	158,560	-	158,560	-
Cash paid for business acquisitions	1,248,692	-	1,248,692	-
Less: Cash acquired	112,312	-	112,312	-
Business acquisitions, net of cash acquired	$  1,136,380	$                 -	$  1,136,380	$                 -