Stock-Based Compensation and Employee Benefits - Schedule of RSUs and Stock Options (Detail) - $ / shares	3 Months Ended	12 Months Ended
Dec. 31, 2016	Oct. 01, 2016	Dec. 31, 2016
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs, Number of Awards Granted	587,140	240,843	827,983
RSUs, Weighted Average Fair Value on Date of Grant	$ 25.68	$ 25.69	$ 25.69
Nonqualified Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options, Number of Awards Granted	8,960	648,301	657,261
Stock Options, Weighted Average Fair Value on Date of Grant	$ 4.91	$ 4.74

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).

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)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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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- 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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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ 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 (d)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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