The amount of expense during a period related to right of way contractual agreements.

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The amount of penalty by the EPA or another regulatory authority from alleged failure to comply with environmental regulations.

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Site Contingency, Number of Sites Needing Remediation

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No definition available.

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of loss contingency liability.

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Number of pending claims pertaining to a loss contingency.

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The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.

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For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

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Cash outflows made during the period for environmental remediation activities.

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The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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The cash inflow from a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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Regulatory Matters, Commitments, Contingencies And Environmental Liabilities Narrative (Details) $ in Millions		3 Months Ended		6 Months Ended
	Jan. 01, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Contractual Right of Way, Expense		$ 10.0	$ 6.0	$ 19.0	$ 12.0
Loss contingency accrual, at carrying value		92.0		92.0		$ 98.0
Loss Contingency, Range of Possible Loss, Portion Not Accrued		80.0		80.0
Accrual for Environmental Loss Contingencies		$ 304.0		$ 304.0		$ 320.0
Sunoco, Inc. [Member]
Loss Contingency, Pending Claims, Number		5		5
Payments for Environmental Liabilities		$ 7.0	9.0	$ 15.0	15.0
Revolution Pipeline [Member]
Payments for Legal Settlements	$ 2.0
SPLP [Member]
Environmental Penalty				5.4
SPLP and Mid-Valley Pipeline [Member]
Environmental Penalty				$ 1.0
Sunoco [Member]
Sites where remediation operations are responsibility of third parties		30		30
Civil Penalties [Member] \| Revolution Pipeline [Member]
Payments for Legal Settlements	$ 28.6
PES [Member]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest		7.40%
PES [Member]
Notes Receivable, Related Parties			$ 75.0		$ 75.0
Repayment of Notes Receivable from Related Parties				$ 12.0
Loans and Leases Receivable, Allowance		$ 63.0		$ 63.0