Issuance of common shares to settle stock-based compensation.

No definition available.

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- Definition

Number of annual installments.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award employment period for eligibility of employees participation.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options share based liability net.

+ References

No definition available.

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- Definition

Share-based compensation arrangement by share based payment vesting increment percentage.

+ References

No definition available.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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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

+ Details

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

+ Details

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

+ 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

No definition available.

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ 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)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

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

+ References

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- Definition

An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

+ References

+ Details

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Share-Based Compensation - Additional Information (Details)		12 Months Ended
	Oct. 30, 2012 shares	Dec. 31, 2019 USD ($) Installment $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock-based compensation cost \| $		$ 900,000
Share based compensation outstanding number			69,910
Reclassification of liability for modified equity awards \| $		$ 64,991,000
Unvested Weighted Average grant date fair value \| $ / shares		$ 174.44
Modified Award [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Phantom shares vested		451,480	356,789
Pre-Modification [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Phantom shares vested		282,619
Post-Modification [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Phantom shares vested		112,386
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of annual installments \| Installment		3
Weighted Average Grant Date Fair Value Per, Granted \| $ / shares		$ 144.89	$ 137.78	$ 90.16
Weighted average grant date fair value per, vested \| $		$ 7,300,000	$ 6,200,000	$ 2,700,000
Unrecognized stock-based compensation cost \| $		$ 8,200,000
Unrecognized compensation costs, weighted-average recognition periods		1 year 9 months 18 days
Phantom shares vested		51,675
Unvested Weighted Average grant date fair value \| $ / shares		$ 135.97	$ 107.06
Phantom Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Phantom shares vested		14,326
Phantom Stock Plan \| Accounting Standards Update 2017-09
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock to settle stock based compensation \| $		$ 55,000,000.0
Reclassification of liability for modified equity awards \| $		$ 9,500,000
Phantom Stock Plan \| Modified Award [Member] \| Accounting Standards Update 2017-09
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted Average Grant Date Fair Value Per, Granted \| $ / shares		$ 180.61
Share based compensation outstanding number		409,331
Phantom Stock Plan \| Director [Member] \| Accounting Standards Update 2017-09
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock to settle stock based compensation \| $		$ 10,000,000.0
Vested Phantom Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted Average Grant Date Fair Value Per, Granted \| $ / shares		$ 180.84
Phantom shares vested		395,005
Phantom Share Units (PSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,000,000
Share-based compensation arrangement vesting increment percentage	20.00%
Share based compensation arrangement, employment period for eligibility of employees participation	10 years
Liability for unsettled stock awards \| $		$ 12,300,000	$ 57,200,000
Stock Incentive Plan 2016 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		2,000,000