Stock Based Compensation Plans (Schedule of Stock Options Valuation Assumptions) (Details)	12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Stock Options Valuation Assumptions, Risk Free Interest Rate, Minimum	0.40%
Stock Options Valuation Assumptions, Risk Free Interest Rate, Maximum	0.70%
Stock Options Valuation Assumptions, Expected Volatility Rate, Maximum	39.00%
Stock Options Valuation Assumptions, Expected Volatility Rate, Minimum	37.00%
Stock Options Valuation Assumptions, Expected Term, Maximum	4 years 6 months
Stock Options Valuation Assumptions, Expected Term, Minimum	3 years

Stock Options Valuation Assumptions, Expected Term, Minimum

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- Definition

Stock Options Valuation Assumptions, Expected Volatility Rate, Minimum

+ References

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

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- Definition

The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

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