CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,074	$ 797
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	265	356
Inventory valuation adjustments	7	128
Equity-indexed compensation expense	96	82
Gain on sales of linefill and base gas	(5)	(17)
Settlement of terminated interest rate and foreign currency hedging instruments	8	(23)
(Gain)/loss on foreign currency revaluation	(6)	2
Deferred income tax expense	10	11
Other	(7)	(3)
Changes in assets and liabilities, net of acquisitions	152	(453)
Net cash provided by operating activities	1,594	880
CASH FLOWS FROM INVESTING ACTIVITIES
Cash paid in connection with acquisitions, net of cash acquired	(28)	(1,537)
Additions to property, equipment and other	(1,217)	(852)
Cash received for sales of linefill and base gas	25	55
Cash paid for purchases of linefill and base gas	(61)	(94)
Investment in unconsolidated entities	(124)	(24)
Proceeds from sales of assets	62	21
Cash received upon formation of equity-method investment		55
Other investing activities	3
Net cash used in investing activities	(1,340)	(2,376)
CASH FLOWS FROM FINANCING ACTIVITIES
Net borrowings/(repayments) under PAA senior secured hedged inventory facility (Note 7)	(659)	619
Net borrowings/(repayments) under PAA senior unsecured revolving credit facility (Note 7)	(92)	26
Net borrowings/(repayments) under PNG credit agreement (Note 7)	(32)	54
Net borrowings under commercial paper program (Note 7)	319
Proceeds from the issuance of senior notes	699	1,247
Repayments of senior notes		(500)
Net proceeds from the issuance of common units (Note 9)	400	812
Net proceeds from the issuance of PNG common units	40
Distributions paid to common unitholders (Note 9)	(585)	(502)
Distributions paid to general partner (Note 9)	(270)	(208)
Distributions paid to noncontrolling interests	(37)	(36)
Other financing activities	(25)	(11)
Net cash (used in)/provided by financing activities	(242)	1,501
Effect of translation adjustment on cash	(3)	1
Net increase in cash and cash equivalents	9	6
Cash and cash equivalents, beginning of period	24	26
Cash and cash equivalents, end of period	33	32
Cash paid for:
Interest, net of amounts capitalized	230	207
Income taxes, net of amounts refunded	$ 19	$ 58