Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

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Debt - Letters of Credit, Borrowings and Repayments (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Jan. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Debt
Outstanding letters of credit		$ 95		$ 73
Repayments of PAA senior notes		400	$ 175
Credit agreements and PAA commercial paper program
Debt
Total borrowings		52,600	41,400
Total repayments		$ 52,700	$ 41,600
6.13 percent senior notes due January 2017 \| Senior notes
Debt
Repayments of PAA senior notes	$ 400
Debt instrument, interest rate				6.13%