GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

The changes in the carrying amount of goodwill since January 1, 2015, by reportable segment, were as follows:

In thousands
	United States			International			Total
Balance as of January 1, 2015	$	1,838,739		$	580,093		$	2,418,832
Goodwill acquired during the year, net		1,177,431			273,519			1,450,950
Purchase accounting allocation adjustments		(43,895	)		15,618			(28,277	)
Goodwill other changes		—			(440	)		(440	)
Changes due to foreign currency fluctuations		—			(82,888	)		(82,888	)
Balance as of December 31, 2015		2,972,275			785,902			3,758,177
Goodwill acquired during the year, net		17,390			450			17,840
Purchase accounting allocation adjustments		6,305			1,374			7,679
Changes due to foreign currency fluctuations		—			6,320			6,320
Balance at March 31, 2016	$	2,995,970		$	794,046		$	3,790,016

Amortizable Intangibles

At March 31, 2016 and December 31, 2015, the values of other intangible assets were as follows:

In thousands
	March 31, 2016						December 31, 2015
	Gross Carrying Amount		Accumulated Amortization		Net Value		Gross Carrying Amount		Accumulated Amortization		Net Value
Amortizable intangibles:
Customer relationships	$	1,319,782	$	162,831	$	1,156,951	$	1,304,388	$	144,020	$	1,160,368
Covenants not-to-compete		7,630		5,340		2,290		6,878		5,141		1,737
Tradenames		3,935		1,022		2,913		3,819		948		2,871
Other		16,834		1,314		15,520		18,902		916		17,986
Indefinite lived intangibles:
Operating permits		234,888		—		234,888		233,101		—		233,101
Tradenames		428,282		—		428,282		426,498		—		426,498
Total	$	2,011,351	$	170,507	$	1,840,844	$	1,993,586	$	151,025	$	1,842,561

Indefinite Lived Intangibles

The changes in the carrying amount of intangible assets since January 1, 2015 were as follows:

In thousands
	Total
Balance as of January 1, 2015	$	909,645
Intangible assets acquired during the year, net		1,052,016
Impairments during the year		(4,177	)
Amortization during the year		(45,498	)
Changes due to foreign currency fluctuations		(69,425	)
Balance as of December 31, 2015		1,842,561
Intangible assets acquired during the year, net		8,436
Amortization during the year		(18,274	)
Changes due to foreign currency fluctuations		8,121
Balance at March 31, 2016	$	1,840,844

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
2016	$	72,287
2017		72,300
2018		72,252
2019		72,095
2020		71,805