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Stock-Based Compensation and Other Employee Benefit Plans (Deferred Compensation Plans) (Narrative) (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Deferred Compensation Arrangements [Abstract] |  |
Deferred compensation plans, assets | $ 14.1 | $ 11.9
Deferred compensation plans, liabilities | $ 15.0 | $ 12.3

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- References No definition available. + Details
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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