Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph g(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

-URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809

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- Definition

The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

No definition available.

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Stock-Based Compensation Other Incentives (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	0 Months Ended	11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended		1 Months Ended					12 Months Ended
	Feb. 11, 2010 Successor [Member]	Dec. 31, 2010 Successor [Member]	Dec. 31, 2012 Successor [Member]	Dec. 31, 2011 Successor [Member]	Dec. 31, 2010 Successor [Member] Restricted Stock Units (RSUs) [Member]	Dec. 31, 2012 Successor [Member] Restricted Stock Units (RSUs) [Member]	Dec. 31, 2011 Successor [Member] Restricted Stock Units (RSUs) [Member]	Dec. 31, 2010 Successor [Member] Performance Based Units [Member]	Dec. 31, 2012 Successor [Member] Performance Based Units [Member]	Dec. 31, 2011 Successor [Member] Performance Based Units [Member]	Dec. 31, 2010 Successor [Member] Performance Shares [Member]	Dec. 31, 2012 Successor [Member] Performance Shares [Member]	Dec. 31, 2011 Successor [Member] Performance Shares [Member]	Dec. 31, 2010 Successor [Member] Total Non-Vested Awards [Member]	Dec. 31, 2012 Successor [Member] Total Non-Vested Awards [Member]	Dec. 31, 2011 Successor [Member] Total Non-Vested Awards [Member]	Feb. 12, 2010 Predecessor [Member]	Feb. 12, 2010 Predecessor [Member] Restricted Stock Units (RSUs) [Member]	Feb. 12, 2010 Predecessor [Member] Performance Based Units [Member]	Feb. 12, 2010 Predecessor [Member] Performance Shares [Member]	Feb. 12, 2010 Predecessor [Member] Total Non-Vested Awards [Member]	Dec. 31, 2012 Minimum [Member] Successor [Member] Restricted Stock Units (RSUs) [Member]	Dec. 31, 2012 Maximum [Member] Successor [Member] Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period									3 years													3 years	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Non-vested awards, Beginning of period						101			656			331			1,088
Awards vesting during the period						(26)			(653)			(121)			(800)
Awards forfeited during the period						0			(3)			(210)			(213)
Non-vested awards, End of period						75	101		0	656		0	331		75	1,088
Outstanding non-vested weighted average grant date fair value, Beginning of period						$ 76.90			$ 76.90			$ 76.90			$ 76.90
Vested weighted average grant date fair value						$ 76.90			$ 76.90			$ 76.90			$ 76.90
Forfeited weighted average grant date fair value						$ 0			$ 76.90			$ 76.90			$ 76.90
Outstanding non-vested weighted average grant date fair value, End of period						$ 76.90	$ 76.90		$ 0	$ 76.90		$ 0	$ 76.90		$ 76.90	$ 76.90
Total fair value of shares vested					$ 15	$ 2	$ 6	$ 2	$ 52	$ 36	$ 0	$ 10	$ 0	$ 17	$ 64	$ 42		$ 0	$ 0	$ 0	$ 0
Compensation cost	32	114	19	64													8
Income tax benefit from compensation cost		(40)	(7)	(24)													(3)
Compensation cost, net of tax		74	12	40													5
Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized			$ 1