Supplemental Financial Information (Parent - Statement of Operations Contractual Interest) (Details 1) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Contractual Interest Expense On Prepetition Liabilities Not Recognized In Statement Of Operations	$ 141.5
Parent [Member]
Contractual Interest Expense On Prepetition Liabilities Not Recognized In Statement Of Operations	$ 52.4

The amount of contractual interest expense on prepetition liabilities not included in the statement of operations.

Reference 1: 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=84165509&loc=d3e56145-112766

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6918054&loc=d3e56068-112765

Name:	us-gaap_ContractualInterestExpenseOnPrepetitionLiabilitiesNotRecognizedInStatementOfOperations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration