Aggregate number of shares owed under stock option plans and other equity-based compensation arrangements.

No definition available.

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- Definition

The percentage of the performance factor for the future three year performance period used for performance shares and units.

+ References

No definition available.

+ Details

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- Definition

The percentage of the performance factor for the three year performance period used for performance shares and units.

+ References

No definition available.

+ Details

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

+ Details

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ 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 (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

+ Details

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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.

+ References

No definition available.

+ Details

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ 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 (a)(3)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

+ Details

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Period Type:	instant

- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the 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 (a)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Period Type:

- Details

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- Details

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Equity (Stock-Based Compensation Plans - Narrative) (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
2015 Stock Plan
Equity - Stock-based Compensation Plans [Line Items]
Aggregate number of shares authorized for issuance		35,579,009
Other Stock And Incentive Plans
Equity - Stock-based Compensation Plans [Line Items]
Deferred shares		902,102
2015 Director Stock Plan
Equity - Stock-based Compensation Plans [Line Items]
Aggregate number of shares authorized for issuance		1,612,301
Other Director Stock Plans
Equity - Stock-based Compensation Plans [Line Items]
Deferred shares		275,521
Stock Options
Equity - Stock-based Compensation Plans [Line Items]
Award Expiration Date		10 years	10 years	10 years
Stock Options \| Minimum
Equity - Stock-based Compensation Plans [Line Items]
Vesting period		1 year
Stock Options \| Maximum
Equity - Stock-based Compensation Plans [Line Items]
Vesting period		3 years
Stock Options \| Liability Awards Plan
Equity - Stock-based Compensation Plans [Line Items]
Paid		0
Performance Shares
Equity - Stock-based Compensation Plans [Line Items]
Paid		(1,594,846)
Performance Factor			87.70%
Performance Shares \| Scenario, Forecast
Equity - Stock-based Compensation Plans [Line Items]
Paid	(1,068,099)
Performance Shares \| Minimum
Equity - Stock-based Compensation Plans [Line Items]
Future Performance Factor		0.00%
Performance Shares \| Maximum
Equity - Stock-based Compensation Plans [Line Items]
Future Performance Factor		175.00%
Performance Shares \| Liability Awards Plan
Equity - Stock-based Compensation Plans [Line Items]
Paid		(212,464)
Performance Shares \| Liability Awards Plan \| Scenario, Forecast
Equity - Stock-based Compensation Plans [Line Items]
Paid	(166,191)
Restricted Stock Units
Equity - Stock-based Compensation Plans [Line Items]
Paid		(1,501,304)
Restricted Stock Units \| Liability Awards Plan
Equity - Stock-based Compensation Plans [Line Items]
Paid		(327,848)