Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2016

Supplemental Cash Flow Information [Abstract]

Supplemental Disclosure of Cash Flow Information and Non-cash Investing and Financing Activities

The following table is a summary of the supplemental cash flow information during the years ended December 31, 2016, 2015 and 2014.

	Years Ended December 31,
	2016		2015			2014
Supplemental disclosure of cash flow information:
Interest paid	$	470,655	$	489,970		$	491,076
Income taxes paid	13,821		28,771			18,770
Supplemental disclosure of non-cash investing and financing activities:
Increase (decrease) in accounts payable for purchases of property and equipment	17,922		(7,042		)	11,407
Purchase of property and equipment under capital leases and installment land purchases	52,322		60,270			43,609
Installment payment receivable for sale of CCAL (see note 3)	—		117,384			—