Fair Value Disclosures (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures

Estimated Fair Values and Carrying Amounts of Assets and Liabilities

	Level in Fair Value Hierarchy	June 30, 2017				December 31, 2016
		Carrying  Amount		Fair Value		Carrying  Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	199,663	$	199,663	$	567,599	$	567,599
Restricted cash, current and non-current	1	122,913		122,913		129,547		129,547
Liabilities:
Total debt and other obligations	2	13,841,265		14,399,704		12,171,142		12,660,013