Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

Name:	us-gaap_ValuationAllowanceLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 09
-Article 12

+ Details

Name:	us-gaap_ValuationAllowancesAndReservesBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

+ References

+ Details

Name:	us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

+ References

+ Details

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

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_SuccessorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_AllowanceForDoubtfulAccountsCurrentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Schedule II - Valuation and Qualifying Accounts (Details) - Valuation and Qualifying Accounts - USD ($) $ in Millions	8 Months Ended	12 Months Ended
	Aug. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Successor [Member] \| Allowance for Doubtful Accounts, Current [Member]
Valuation Allowance [Line Items]
Beginning Balance		$ 11	$ 6
Additions		4	5	$ 6
Net Deductions and Other		5
Ending Balance		10	11	6
Successor [Member] \| Valuation Allowance of Deferred Tax Assets [Member]
Valuation Allowance [Line Items]
Beginning Balance	$ 1,273	1,127	953	1,273
Additions		182	257	157
Net Deductions and Other		108	83	477
Ending Balance		$ 1,201	$ 1,127	953
Predecessor [Member] \| Allowance for Doubtful Accounts, Current [Member]
Valuation Allowance [Line Items]
Beginning Balance	30			30
Net Deductions and Other	8
Ending Balance	22
Predecessor [Member] \| Valuation Allowance of Deferred Tax Assets [Member]
Valuation Allowance [Line Items]
Beginning Balance	2,838			$ 2,838
Additions	180
Net Deductions and Other	1,745
Ending Balance	$ 1,273