Additional Financial Information (Narrative) (Details) - April 2020 Term Loan Credit Agreement [Member] - Bank of America, N.A. [Member] $ in Millions	1 Months Ended
Apr. 30, 2020 USD ($)
Subsequent Event [Line Items]
Credit agreement - initiation date	Apr. 06, 2020
Credit agreement - maximum borrowing capacity	$ 5,500
Credit agreement - advances outstanding	$ 5,500
Credit agreement - Lender	commercial banks and Bank of America, N.A., as lead agent
Credit agreement - maturity date	Dec. 31, 2020

Date the debt instrument was issued, in CCYY-MM-DD format.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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-Name Accounting Standards Codification
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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

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- Definition

Identification of the lender or type of lender, such as bank, insurance entity, pension fund.

+ References

No definition available.

+ Details

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- Definition

For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, the maximum amount borrowed at any time during the period.

+ References

No definition available.

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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