Comparison period of peer companies for performance awards.

No definition available.

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- Definition

Number Of Shares Used To Calculate Shares That May Be Granted Under The Long-Term Incentive Plan, Options And Stock Appreciation Rights

+ References

No definition available.

+ Details

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- Definition

Number Of Shares Used To Calculate Shares That May Be Granted Under The Long-Term Incentive Plan, Other Awards

+ 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=120381028&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ 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)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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=120381028&loc=d3e5070-113901

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- Definition

Percentage of vesting of award under share-based payment arrangement.

+ References

+ Details

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Share-Based Compensation (Narrative) (Details) - shares	12 Months Ended
Share-Based Compensation (Narrative) (Details) - shares	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017
Restricted Stock Awards And Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, awards and units	3,056,000
Performance-Based Restricted Stock Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, awards and units	0	0
Performance Share Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, awards and units	688,000
Comparison period of peer companies for performance awards	3 years
Minimum [Member] \| Restricted Stock Awards And Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	1 year
Minimum [Member] \| Performance-Based Restricted Stock Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	1 year
Minimum [Member] \| Performance Share Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of vesting units to units granted	0.00%
Maximum [Member] \| Restricted Stock Awards And Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	4 years
Maximum [Member] \| Performance-Based Restricted Stock Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	4 years
Maximum [Member] \| Performance Share Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of vesting units to units granted	200.00%
2017 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares authorized for issuance			33,500,000
Number of shares used to calculate shares that may be granted under the Long-Term Incentive Plan, options and stock appreciation rights			1
Number of shares used to calculate shares that may be granted under the Long-Term Incentive Plan, other awards			2.3