CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 536	$ 237
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	82	60
Equity compensation expense	51	39
Gain on sales of linefill and base gas		(12)
Net cash paid for terminated interest rate and foreign currency hedging instruments		(23)
Other	(1)	(4)
Changes in assets and liabilities, net of acquisitions	311	20
Net cash provided by operating activities	979	317
CASH FLOWS FROM INVESTING ACTIVITIES
Cash paid in connection with acquisitions, net of cash acquired	(31)	(21)
Change in restricted cash		(1,632)
Additions to property, equipment and other	(363)	(263)
Cash received for sales of linefill and base gas	9	30
Cash paid for purchases of linefill and base gas	(13)	(17)
Investment in unconsolidated entities	(48)
Proceeds from sales of assets	2	13
Net cash used in investing activities	(444)	(1,890)
CASH FLOWS FROM FINANCING ACTIVITIES
Net borrowings/(repayments) on PAA's revolving credit facility	(72)	184
Net repayments on PAA's hedged inventory facility	(335)	(75)
Net borrowings/(repayments) on PNG's credit agreements	27	(5)
Proceeds from the issuance of senior notes		1,247
Net proceeds from the issuance of common units (Note 9)	131	455
Distributions paid to common unitholders (Note 9)	(189)	(159)
Distributions paid to general partner (Note 9)	(85)	(66)
Distributions paid to noncontrolling interests	(12)	(12)
Other financing activities		(9)
Net cash provided by/(used in) financing activities	(535)	1,560
Effect of translation adjustment on cash		1
Net increase/(decrease) in cash and cash equivalents	0	(12)
Cash and cash equivalents, beginning of period	24	26
Cash and cash equivalents, end of period	24	14
Cash paid for:
Interest, net of amounts capitalized	70	78
Income taxes, net of amounts refunded	$ 9	$ 28