Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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-Topic 718
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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.

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- Definition

Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition.

+ References

No definition available.

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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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
-Paragraph 2
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- Definition

Percentage of vesting of share-based compensation awards.

+ References

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Stockholders' Equity - Narrative (Details) - RSUs - Certain Employees - USD ($) shares in Thousands, $ in Millions	1 Months Ended	2 Months Ended	3 Months Ended	7 Months Ended	9 Months Ended
	Jul. 31, 2018	Sep. 30, 2018	Sep. 30, 2017	Jul. 31, 2018	Sep. 30, 2017
Class of Stock [Line Items]
Shares granted (in shares)		73		3,297
Compensation expense	$ 9	$ 2	$ 4	$ 17	$ 13
Accelerated vesting compensation cost		$ 7
Tranche One
Class of Stock [Line Items]
Vesting percentage		33.30%
Tranche Two
Class of Stock [Line Items]
Vesting percentage		33.30%
Tranche Three
Class of Stock [Line Items]
Vesting percentage		33.40%