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Derivatives and Risk Management Activities - Financial Impact (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	$ 325	$ 106	$ (198)
Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	318	127	(180)
Field operating costs
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	14	(2)	(10)
Depreciation and amortization
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income			(3)
Interest expense, net
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	(9)	(5)	(18)
Other income/(expense), net
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	2	(14)	13
Commodity Derivatives
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	324	148	(201)
Foreign Currency Derivatives
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	8	(23)	8
Preferred Distribution Rate Reset Option
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	2	(14)	13
Interest Rate Derivatives
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	(9)	(5)	(18)
Derivatives not designated as a Hedge | Commodity Derivatives | Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	310	150	(188)
Derivatives not designated as a Hedge | Commodity Derivatives | Field operating costs
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	14	(2)	(10)
Derivatives not designated as a Hedge | Commodity Derivatives | Depreciation and amortization
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income			(3)
Derivatives not designated as a Hedge | Foreign Currency Derivatives | Supply and Logistics segment revenues
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	8	(23)	8
Derivatives not designated as a Hedge | Preferred Distribution Rate Reset Option | Other income/(expense), net
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	2	(14)	13
Derivatives in Hedging Relationships | Interest Rate Derivatives | Interest expense, net
Impact of derivative activities recognized in earnings
Total gain (loss) on derivatives recognized in net income	$ (9)	$ (5)	$ (18)

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

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