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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 837 $ 624
Reconciliation of net income to net cash provided by operating activities:    
Depreciation and amortization 173 146
Inventory valuation adjustments 0 121
Equity-indexed compensation expense 78 60
Gain on sales of linefill and base gas (3) (16)
Net cash paid for terminated interest rate and foreign currency hedging instruments   (23)
(Gain)/loss on foreign currency revaluation (5) 12
Deferred income tax expense 17 7
Other (1) (3)
Changes in assets and liabilities, net of acquisitions 241 (580)
Net cash provided by operating activities 1,337 348
CASH FLOWS FROM INVESTING ACTIVITIES    
Cash paid in connection with acquisitions, net of cash acquired (31) (1,534)
Additions to property, equipment and other (785) (544)
Cash received for sales of linefill and base gas 14 49
Cash paid for purchases of linefill and base gas (24) (29)
Investment in unconsolidated entities (112)  
Proceeds from sales of assets 3 19
Other investing activities 3 1
Net cash used in investing activities (932) (2,038)
CASH FLOWS FROM FINANCING ACTIVITIES    
Net borrowings/(repayments) on PAA's revolving credit facility (Note 7) (65) 168
Net borrowings/(repayments) on PAA's hedged inventory facility (Note 7) (85) 140
Net borrowings/(repayments) on PNG's credit agreements (Note 7) (36) 37
Proceeds from the issuance of senior notes   1,247
Net proceeds from the issuance of common units (Note 9) 331 535
Issuance of PNG common units 30  
Short-term borrowings related to cash overdraft   48
Distributions paid to common unitholders (Note 9) (384) (328)
Distributions paid to general partner (Note 9) (175) (135)
Distributions paid to noncontrolling interests (24) (24)
Other financing activities (2) (10)
Net cash provided by/(used in) financing activities (410) 1,678
Effect of translation adjustment on cash (3) (2)
Net decrease in cash and cash equivalents (8) (14)
Cash and cash equivalents, beginning of period 24 26
Cash and cash equivalents, end of period 16 12
Cash paid for:    
Interest, net of amounts capitalized 146 129
Income taxes, net of amounts refunded $ 18 $ 48