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Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2014
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information
SUPPLEMENTAL CASH FLOW INFORMATION
Supplemental cash flow information and non-cash investing and financing activities for the years ended December 31, 2014, 2013 and 2012 are as follows (in thousands):
 
 
2014
 
2013
 
2012
Supplemental cash flow information:
 
 
 
 
 
Cash paid for interest
$
548,089

 
$
397,366

 
$
366,458

Cash paid for income taxes (net of refunds of $8,476, $19,701 and $20,847, respectively)
69,212

 
51,676

 
69,277

Non-cash investing and financing activities:
 
 
 
 
 
Increase (decrease) in accounts payable and accrued expenses for purchases of property and equipment and construction activities
1,121

 
9,147

 
(10,244
)
Purchases of property and equipment under capital leases
36,486

 
27,416

 
19,219

Fair value of debt assumed through acquisitions
463,135

 
1,576,186

 
—

Settlement of accounts receivable related to acquisitions
31,849

 
—

 
—

Conversion of third-party debt to equity
111,181

 
—

 
—