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Accounts Receivable (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Accounts Receivable    
Advance cash payments received from third parties to mitigate credit risk $ 130us-gaap_CustomerAdvancesCurrent $ 180us-gaap_CustomerAdvancesCurrent
Standby letters of credit 12paa_StandbyLettersOfCreditReceived 198paa_StandbyLettersOfCreditReceived
Substantially all accounts receivable, net, maximum age of balances past their scheduled invoice date 30 days 30 days
Allowance for doubtful accounts receivable $ 4us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 4us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent