Long-Term Debt and Borrowing Arrangements (Schedule of Available Capacity Under Borrowing Arrangements) (Details) - $750 million revolving credit facility (due May 2023) - USD ($) |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Debt Instrument [Line Items] | ||
| Total capacity | $ 750,000,000 | |
| Less: Letters of credit | 15,000,000 | |
| Available capacity | 735,000,000 | |
| Line of Credit | ||
| Debt Instrument [Line Items] | ||
| Long-term debt | $ 0 | $ 0 |
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- 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. No definition available.
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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