Segment Information - Segment Adjusted EBITDA Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information
Segment Adjusted EBITDA	$ 622	$ 513	$ 1,849	$ 1,630
Adjustments:
Depreciation and amortization of unconsolidated entities	(21)	(21)	(58)	(109)
Gains/(losses) from derivative activities and inventory valuation adjustments	376	(13)	363	23
Long-term inventory costing adjustments	(83)	13	22	81
Deficiencies under minimum volume commitments, net	(16)	(56)	(31)	(31)
Equity-indexed compensation expense	(9)	(6)	(24)	(14)
Net gain (loss) on foreign currency revaluation	2	(3)	1	(2)
Significant transaction-related expenses		(2)		(5)
Adjusted EBITDA attributable to noncontrolling interests	98	5	264	12
Depreciation and amortization	(238)	(178)	(711)	(551)
Gains/(losses) on asset sales and asset impairments, net	0	(221)	46	(592)
Gain on investment in unconsolidated entities	1		1
Interest expense, net	(99)	(106)	(305)	(319)
Other income/(expense), net	(82)	(10)	(237)	13
INCOME/(LOSS) BEFORE TAX	551	(85)	1,095	136
Income tax (expense)/benefit	(109)	30	(177)	16
NET INCOME/(LOSS)	442	(55)	918	152
Net income attributable to noncontrolling interests	(58)	(4)	(144)	(9)
NET INCOME/(LOSS) ATTRIBUTABLE TO PAA	$ 384	$ (59)	774	$ 143
Line 901 Incident
Adjustments:
Line 901 incident			$ (85)

Adjusted EBITDA Attributable To Noncontrolling Interests

No definition available.

Name:	paa_AdjustedEBITDAAttributableToNoncontrollingInterests
Namespace Prefix:	paa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Includes the impact of amounts billed to counterparties for their deficiency obligation, net of applicable amounts subsequently recognized into revenue. Certain agreements require counterparties to deliver, transport or throughput a minimum volume over an agreed upon period. Substantially all of such agreements were entered into with counterparties to economically support the return on the reporting entity's capital expenditure necessary to construct the related asset. Some of these agreements include make-up rights if the minimum volume is not met. A receivable from the counterparty is recorded in the period that services are provided or when the transaction occurs, including amounts for deficiency obligations from counterparties associated with minimum volume commitments. If a counterparty has a make-up right associated with a deficiency, the revenue attributable to the counterparty’s make-up right is deferred and is subsequently recognized at the earlier of when the deficiency volume is delivered or shipped, when the make-up right expires or when it is determined that the counterparty’s ability to utilize the make-up right is remote.

+ References

No definition available.