Equity-Indexed Compensation Plans (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended	92 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015
Grant Date Fair Value of Outstanding AAP Management Units
Equity-indexed compensation expense	$ 19	$ 34
AAP Management Units
Reserved for Future Grants
Reserved for future grants, beginning balance (in units)	3.0
Reserved for future grants, ending balance (in units)	3.0		3.0
Outstanding
Outstanding, beginning balance (in units)	49.1
Outstanding, ending balance (in units)	49.1		49.1
Outstanding Units Earned
Outstanding Units Earned, beginning balance (in units)	47.8
Earned (in units)	0.3
Outstanding Units Earned, ending balance (in units)	48.1		48.1
Grant Date Fair Value of Outstanding AAP Management Units
Grant Date Fair Value of Outstanding AAP Management Units, beginning balance	64
Grant Date Fair Value of Outstanding AAP Management Units, ending balance	64		64
Equity-indexed compensation expense	$ 1		$ 56

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- Definition

The number of shares outstanding/issued under a share-based award plan which have become earned during the reporting period as certain performance conditions have been met giving the grantee the right to receive quarterly distributions.

+ References

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The grant date fair value of outstanding units.

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- Definition

The number of outstanding awards on non-stock option plans for which the employer has issued equity instruments to an employee, including both employees who have and who have not yet satisfied service or performance criteria necessary to gain title to distributions to the shares.

+ References

No definition available.

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The number of authorized units of the general partnership that have not yet been granted/issued and are reserved for future grants.

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The number of outstanding awards on non-stock option plans for which the employer has issued equity instruments to an employee and the units issued have been earned as required performance conditions have been met, giving the employee the right to receive quarterly distributions.

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No definition available.

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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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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