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Equity-Indexed Compensation Plans (Details 2) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
PAA Long-term Incentive Plan Awards
Outstanding (in units)
Outstanding at beginning of period (in units)	6.0	8.0	8.8
Granted (in units)	4.1	1.5	1.0
Vested (in units)	(1.8)	(3.2)	(1.4)
Cancelled or forfeited (in units)	(0.3)	(0.3)	(0.4)
Conversion of PNG unit-denominated awards into PAA unit-denominated awards (in units)	0.4
Outstanding at end of period (in units)	8.4	6.0	8.0
Weighted Average Grant Date Fair Value per unit
Outstanding at beginning of period (in dollars per unit)	$ 25.55	$ 21.77	$ 20.85
Granted (in dollars per unit)	$ 47.60	$ 33.90	$ 27.53
Vested (in dollars per unit)	$ 24.79	$ 19.82	$ 20.34
Cancelled or forfeited (in dollars per unit)	$ 36.70	$ 29.36	$ 20.99
Conversion of PNG unit-denominated awards into PAA unit-denominated awards (in dollars per unit)	$ 40.54
Outstanding at end of period (in dollars per unit)	$ 36.97	$ 25.55	$ 21.77
Units issued in connection with the settlement of vested awards, net of tax withholding (in units)	0.5	1.0	0.5
Units withheld for taxes (in units)	0.3	0.5	0.2
Vested awards settled in cash (in units)	1.0	1.7	0.8
PAA Long-term Incentive Plan Awards | Liability Awards
Equity-Indexed Compensation Plans
Accrued liability related to all outstanding LTIP awards and DERs	$ 98	$ 90
Short-term accrued liability related to all outstanding LTIP awards and DERs	43
Long-term accrued liability related to all outstanding LTIP awards and DERs	$ 55
Annualized distribution probable of occurring (in dollars per share)	$ 2.75
PNG LTIP Awards
Outstanding (in units)
Outstanding at beginning of period (in units)	0.9	0.8	1.0
Granted (in units)	0.4	0.1
Vested (in units)			(0.1)
Cancelled or forfeited (in units)	(0.3)		(0.1)
Conversion of PNG unit-denominated awards into PAA unit-denominated awards (in units)	(1.0)
Outstanding at end of period (in units)		0.9	0.8
Weighted Average Grant Date Fair Value per unit
Outstanding at beginning of period (in dollars per unit)	$ 17.49	$ 20.55	$ 20.55
Granted (in dollars per unit)	$ 17.51	$ 15.33
Vested (in dollars per unit)	$ 18.88	$ 23.64	$ 23.62
Cancelled or forfeited (in dollars per unit)	$ 21.62		$ 19.20
Conversion of PNG unit-denominated awards into PAA unit-denominated awards (in dollars per unit)	$ 16.41
Outstanding at end of period (in dollars per unit)		$ 17.49	$ 20.55
PNG LTIP Awards | Maximum
Outstanding (in units)
Vested (in units)	(0.1)	(0.1)
PNG Transaction Grants
Outstanding (in units)
Cancelled or forfeited (in units)	(0.3)

X

- Definition

Annualized distribution probable of occurring for which a portion of the liability for awards based on performance levels is accrued.

+ References

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were converted during the reporting period to awards denominated in another type of units.

+ References

No definition available.

+ Details

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X

- Definition

Represents the weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were converted during the reporting period to awards denominated in another type of units.

+ References

No definition available.

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X

- Definition

Represents the vested units which were settled in cash during the reporting period as a result of any share-based compensation plan other than an employee stock ownership plan.

+ References

No definition available.

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X

- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable after one year (or the operating cycle, if longer).

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable within one year (or the operating cycle, if longer).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)

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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.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(3)

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

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X

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

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

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

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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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

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

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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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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

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

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X

- Definition

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(2)

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X

- Definition

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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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(2)

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- Definition

For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

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- Definition

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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-Name Accounting Standards Codification

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-SubTopic 10

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-Paragraph 2

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

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-Paragraph 1

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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