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Related Party Transactions - Promissory Notes with our General Partner (Details) - PAGP - Related Party Promissory Notes - General Partner - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Related Party Transaction [Line Items]
Related party note receivable	$ 1,349	$ 948
Related party note payable	$ 1,349	$ 948

X

- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

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+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Amount, after allowance for credit loss, of receivable classified as other and noncurrent.

+ References

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Balance Type:	debit
Period Type:	instant

X

- Definition

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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Period Type:	duration

X

- Details

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Period Type:

X

- Details

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Period Type:

X

- Details

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Period Type: