GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill since January 1, 2013, by reportable segment, were as follows:

In thousands
	United States			International			Total
Balance as of January 1, 2013	$	1,616,286		$	448,817		$	2,065,103
Goodwill acquired during year	57,250			116,534			173,784
Goodwill allocation adjustments	4,541			1,470			6,011
Changes due to foreign currency fluctuations	—			(13,316		)	(13,316		)
Balance as of December 31, 2013	1,678,077			553,505			2,231,582
Goodwill acquired during year	168,592			21,160			189,752
Goodwill allocation adjustments	(2,051		)	(9,268		)	(11,319		)
Changes due to foreign currency fluctuations	—			11,333			11,333
Balance as of June 30, 2014	$	1,844,618		$	576,730		$	2,421,348

Values of Intangible Assets

As of June 30, 2014 and December 31, 2013, the values of other intangible assets were as follows:

In thousands
	June 30, 2014						December 31, 2013
	Gross Carrying Amount		Accumulated Amortization		Net Value		Gross Carrying Amount		Accumulated Amortization		Net Value
Amortizable intangibles:
Covenants not-to-compete	$	9,423	$	6,026	$	3,397	$	9,405	$	5,366	$	4,039
Customer relationships	753,243		96,395		656,848		670,889		81,271		589,618
Tradenames	5,370		1,189		4,181		5,283		1,031		4,252
Technology	20,291		703		19,588		611		416		195
Other	336		19		317		91		14		77
Indefinite lived intangibles:
Operating permits	236,407		—		236,407		116,054		—		116,054
Tradenames	5,800		—		5,800		5,800		—		5,800
Total	$	1,030,870	$	104,332	$	926,538	$	808,133	$	88,098	$	720,035

Estimated Amortization Expense

The estimated amortization expense for each of the next five years, assuming no additional amortizable intangible assets, is as follows for the years ended December 31:

In thousands
2014	$	34,623
2015	37,144
2016	36,795
2017	36,650
2018	36,319