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 which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&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://www.xbrl.org/2003/role/presentationRef
-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=96867065&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

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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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- Details

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- Details

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- Details

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- Details

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Equity (Stock-Based Compensation Plans - Narrative) (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
2015 Stock Plan
Equity - Stock-based Compensation Plans [Line Items]
Aggregate number of shares authorized for issuance		36,166,517
Other Stock And Incentive Plans
Equity - Stock-based Compensation Plans [Line Items]
Deferred shares		1,351,798
2015 Director Stock Plan
Equity - Stock-based Compensation Plans [Line Items]
Aggregate number of shares authorized for issuance		1,702,903
Other Director Stock Plans
Equity - Stock-based Compensation Plans [Line Items]
Deferred shares		223,176
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		(1,192,734)
Performance Factor			44.40%
Performance Shares \| Scenario, Forecast
Equity - Stock-based Compensation Plans [Line Items]
Paid	(1,194,283)
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		(185,178)
Restricted Stock Units
Equity - Stock-based Compensation Plans [Line Items]
Vesting period		3 years
Paid		(1,720,168)
Restricted Stock Units \| Liability Awards Plan
Equity - Stock-based Compensation Plans [Line Items]
Paid		(368,049)