Maximum contribution by plan participants under purchase match plan.

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Award Types

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award payout rate.

+ 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

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ 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 (d)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&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

Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

+ References

No definition available.

+ 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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Share-Based Payments - Narrative (Details)	12 Months Ended
Share-Based Payments - Narrative (Details)	Dec. 31, 2020 USD ($) award	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of award types (in award types) \| award	2
Restricted Stock and Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected average period (years)	3 years
Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected average period (years)	5 years
Aggregate grant date fair value	$ 4,700,000	$ 4,900,000	$ 3,600,000
Aggregate intrinsic value	$ 2,600,000	4,600,000	4,100,000
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate grant date fair value		2,700,000	4,500,000
Aggregate intrinsic value		$ 2,600,000	$ 5,000,000.0
The percentage of award vest (percent)		95.00%	125.00%
Performance Share Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
The percentage of award vest (percent)	50.00%
Performance Share Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
The percentage of award vest (percent)	200.00%
Purchase Match Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected average period (years)	3 years
Aggregate grant date fair value		$ 2,200,000	$ 1,100,000
Aggregate intrinsic value		$ 1,700,000	$ 1,100,000
Annual contribution for the purchase of shares	$ 5,000