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Stock-Based Compensation - Schedule of Employee Awards and Non-employee Director Award Plan Activity (Detail) - shares shares in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2020
Market RSU's
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted awards	1,571,000			1,571,000
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted awards	1,776,250	2,881,913	272,067	4,930,230
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted awards		117,900	78,500	196,400
Employees Awards | Market RSU's
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted awards	1,571,000			1,571,000
Employees Awards | RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted awards	1,776,250	2,109,228	230,000	4,115,478
Employees Awards | Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted awards		117,900	78,500	196,400
Non-employee Directors Awards | RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted awards		772,685	42,067	814,752

X

- 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

+ 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

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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