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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 |  |  |

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187143-122770 + Details
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