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Equity Awards and Instruments - Schedule of Fair Value Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	26.32%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	27.18%
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	31.04%	29.57%
Expected dividend yield	1.11%	1.38%	1.18%
Risk-free interest rate	1.31%	2.48%	2.40%
Expected term (in years)	3 years 9 months	3 years 9 months	3 years 9 months
Weighted average grant date fair value of options issued (USD per share)	$ 2.49	$ 1.66	$ 1.46

X

- Definition

Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

+ References

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ 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)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

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.

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- Definition

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

+ References

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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.

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- Definition

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.

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