Maximum adjustment factor allowed under the form of performance share award agreement.

No definition available.

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- Definition

Minimum adjustment factor allowed under the form of performance share award agreement.

+ References

No definition available.

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- Definition

The minimum number of awards to be issued if minimum performance targets are not achieved.

+ References

No definition available.

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- Definition

Share-based compensation arrangement by share-based payment award, equity instruments other than options, number of common shares awarded upon settlement.

+ References

No definition available.

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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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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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
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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).

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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

Number of shares authorized for issuance under share-based payment arrangement.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Share-Based Compensation - Additional Information (Detail) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	May 05, 2020
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity Instruments other than options, grants in period	459,000	462,000
Share-based compensation arrangement by share-based payment award, equity Instruments other than options, grants in period. Weighted average fair value	$ 72.90	$ 75.73
Share-based compensation arrangement by share-based payment award, award vesting period	3 years	3 years
Number of common stock issued per unit based award upon vesting	100.00%	100.00%
Non-Employee Directors Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity Instruments other than options, grants in period	19,000	24,000
Performance Stock Units (PSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity Instruments other than options, grants in period	95,000	96,000
Number of common stock issued per unit based award upon vesting	100.00%	100.00%
Maximum adjustment factor	200.00%	200.00%
Minimum adjustment factor	50.00%	50.00%
Minimum shares issued	0	0
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock issued during period, shares, employee stock purchase plans	0	0	0	0
2017 Amended and Restated Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares authorized					5,500,000