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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)
12 Months Ended
Dec. 31, 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 at January 1, 2013
 
$
1,616,286

 
$
448,817

 
$
2,065,103

Goodwill acquired during year
 
57,250

 
116,534

 
173,784

Purchase accounting allocation adjustments
 
4,541

 
1,470

 
6,011

Changes due to foreign currency fluctuations
 

 
(13,316
)
 
(13,316
)
Balance at December 31, 2013
 
1,678,077

 
553,505

 
2,231,582

Goodwill acquired during year
 
169,754

 
88,263

 
258,017

Purchase accounting allocation adjustments
 
(4,825
)
 
(17,595
)
 
(22,420
)
Changes due to foreign currency fluctuations
 

 
(48,347
)
 
(48,347
)
Balance at December 31, 2014
 
$
1,843,006

 
$
575,826

 
$
2,418,832

Values of Intangible Assets
At December 31, 2014 and 2013, the values of other intangible assets were as follows:
In thousands
 
2014
 
2013
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Value
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Value
Amortizable intangibles:
 
 
 
 
 
 
 
 
 
 
 
Covenants not-to-compete
$
8,474

 
$
5,688

 
$
2,786

 
$
9,405

 
$
5,366

 
$
4,039

Customer relationships
755,148

 
107,365

 
647,783

 
670,889

 
81,271

 
589,618

Trade names
6,062

 
1,313

 
4,749

 
5,283

 
1,031

 
4,252

Technology
611

 
521

 
90

 
611

 
416

 
195

Other
539

 
35

 
504

 
91

 
14

 
77

Indefinite lived intangibles:
 
 
 
 
 
 
 
 
 
 
 
Operating permits
247,933

 

 
247,933

 
116,054

 

 
116,054

Trade names
5,800

 

 
5,800

 
5,800

 

 
5,800

Total
$
1,024,567

 
$
114,922

 
$
909,645

 
$
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
2015
 
$
34,431

2016
 
34,091

2017
 
33,946

2018
 
33,891

2019
 
33,870