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Equity-Based Compensation - Summary of Number of Share-Based Awards Granted (Detail)	6 Months Ended
	Jun. 30, 2019 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance share payout measured by return on invested capital	30.00%
Percentageofperformancesharepayoutmeasuredbyfreeoperatingcashflow	0.00%
PercentageofperformancesharepayoutADJUSTMENTmeasuredbytotalshareholderreturn	0.00%
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based awards granted | shares	151,664
Grant-date fair value of awards per share | $ / shares	$ 26.60
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based awards granted | shares	133,533
Grant-date fair value of awards per share | $ / shares	$ 26.79

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Percentage of performance share payout measured by free operating cash flow

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Percentage of performance share payout measured by return on invested capital

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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=116856206&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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-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=116856206&loc=d3e5070-113901

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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.

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