Debt Obligations Debt Obligations (Covenants Related To Credit Agrrements) (Narrative) (Details)	12 Months Ended
Dec. 31, 2020
Debt Instrument [Line Items]
Supplementary Leverage Ratio	4.31
ETO [Member]
Debt Instrument [Line Items]
Leverage Ratio Maximum	5.0
Maximum Leverage Ratio Permitted	5.5
Sunoco LP $1.5 billion Revolving Credit Facility due July 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Covenant Description	Sunoco LP’s Credit Facility requires Sunoco LP to maintain a Net Leverage Ratio of not more than 5.5 to 1. The maximum Net Leverage Ratio is subject to upwards adjustment of not more than 6.0 to 1 for a period not to exceed three fiscal quarters in the event Sunoco LP engages in certain specified acquisitions of not less than $50 million (as permitted under Sunoco LP’s Credit Facility agreement). The Sunoco LP Credit Facility also requires Sunoco LP to maintain an Interest Coverage Ratio (as defined in the Sunoco LP’s Credit Facility agreement) of not less than 2.25 to 1.
USAC Credit Facility, due 2023 [Member]
Debt Instrument [Line Items]
Minimum interest coverage ratio	2.5
Debt Instrument, Covenant Description	a maximum funded debt to EBITDA ratio, determined as of the last day of each fiscal quarter, for the annualized trailing three months of (i) 5.75 to 1 through the end of the fiscal quarter ending December 31, 2020 and (ii) 5.5 to 1 for the fiscal quarters ending March 31, 2021 and June 30, 2021, (iii) 5.25 to 1 for the fiscal quarters ending September 30, 2021 and December 31, 2021 and (iv) 5.0 to 1 thereafter, subject to a provision for increases to such thresholds, in the case of any fiscal quarter ending September 30, 2021 or thereafter, by 0.50 in connection with certain future acquisitions for the six consecutive month period following the period in which any such acquisition occurs, provided that, in any event, such ratio shall not exceed 5.5 to 1.
ETO Credit Facility due December 2022 [Member] \| Minimum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.125%
ETO Credit Facility due December 2022 [Member] \| Maximum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.30%
ETO 364-day Credit Facility due November 2019 [Member] \| Minimum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.125%
ETO 364-day Credit Facility due November 2019 [Member] \| Maximum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.225%
Eurodollar [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Eurodollar [Member] \| ETO Credit Facility due December 2022 [Member] \| Minimum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.125%
Eurodollar [Member] \| ETO 364-day Credit Facility due November 2019 [Member] \| Minimum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Eurodollar [Member] \| ETO 364-day Credit Facility due November 2019 [Member] \| Maximum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Base Rate Loans [Member] \| ETO Credit Facility due December 2022 [Member] \| Minimum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.125%
Base Rate Loans [Member] \| ETO Credit Facility due December 2022 [Member] \| Maximum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Base Rate Loans [Member] \| ETO 364-day Credit Facility due November 2019 [Member] \| Minimum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Base Rate Loans [Member] \| ETO 364-day Credit Facility due November 2019 [Member] \| Maximum [Member] \| ETO [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%

Leverage Ratio Maximum

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- Definition

Maximum Leverage Ratio Permitted

+ References

No definition available.

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- Definition

The minimum interest coverage ratio allowed under a debt covenant.

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No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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- Definition

Ratio of Tier 1 risk-based capital to total leverage exposure as defined by regulatory framework.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826

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