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Non-Cash Compensation Plans Unit-based compensation Narrative (Details) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2018	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares
ET Unit Based Compensation Plans [Member]
Weighted Average Grant-Date Fair Value Per Unit, Awards granted | $ / shares		$ 6.29	$ 12.51	$ 13.00
Fair Value Of Units As Of The Vesting Date		$ 51	$ 47	$ 49
Unvested awards | shares		29.4	28.0
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 193
Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Term		2 years 9 months 18 days
Subsidiary Unit Based Compensation [Member]
Fair Value Of Units As Of The Vesting Date		$ 16	$ 17	$ 22
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 39
Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Term		3 years 7 months 6 days
ETE Merger [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	1.28

X

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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