Chapter 11 Proceedings - Liabilities Subject to Compromise (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Reorganizations [Abstract]
Current maturities of long-term debt and accrued interest	$ 4,179,185
Accounts payable and accrued expenses	189,766
Other long-term liabilities	8,660
Liabilities subject to compromise	$ 4,377,611	$ 0

The amount of trade accounts payable included in liabilities subject to compromise.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=49172455&loc=d3e55717-112764

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6918054&loc=d3e56015-112765

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56145-112766

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