Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Recent Financing Transactions - PAC (Details) - PAC - USD ($) $ in Millions	Jul. 31, 2021	Jun. 30, 2021
First Mortgage Bonds, 2.90%, Due 2052 \| Subsidiary Debt \| Subsequent Event
Debt Instrument [Line Items]
Face amount	$ 1,000
Stated interest rate	2.90%
Unsecured credit facility, $600 million, expiring June 2022, first facility, extended \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 600
Unsecured credit facility, $600 million, expiring June 2022, second facility, extended \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		600
Unsecured Credit Facility, $1.2 Billion, Expiring June 2024, Second Facility, Extended \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 1,200