Number of performance period in performance based share program.

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- Definition

Percentage of multiplication award by product.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award, equity instruments other than options, expected to vest.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award, equity instruments other than options, grants in period, as adjusted.

+ References

No definition available.

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- Definition

Represents share based compensation arrangement by share based payment award fair value assumptions expected forfeiture rate.

+ 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
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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).

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- Definition

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

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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.

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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 additional shares authorized for issuance under share-based payment arrangement.

+ References

No definition available.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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-Publisher FASB
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-SubTopic 10
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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

Price of a single share of a number of saleable stocks of a company.

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No definition available.

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Accounting for Stock-based Compensation - Additional Information (Details) $ / shares in Units, $ in Millions		12 Months Ended
	Apr. 04, 2018 shares	Dec. 31, 2020 USD ($) PerformancePeriod $ / shares shares	Dec. 31, 2019 USD ($) PerformancePeriod shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 PerformancePeriod shares	Dec. 31, 2015 PerformancePeriod
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, outstanding, weighted average remaining contractual term		3 years 9 months 18 days
Share-based compensation arrangement by share-based payment award, award vesting period		3 years
Share-based compensation arrangement by share-based payment award, options, vested and expected to vest, exercisable, weighted average remaining contractual term		2 years 3 months 18 days
Share-based compensation arrangement by share-based payment award, options, exercisable, weighted average remaining contractual term		2 years 3 months 18 days
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares grants		0	0	0
Share-based compensation arrangement by share-based payment award, options, outstanding, weighted average remaining contractual term		10 years
Share price \| $ / shares		$ 74.33
Share-based compensation arrangement by share-based payment award, options, exercises in period, intrinsic value \| $		$ 5.1	$ 4.9	$ 8.3
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share price \| $ / shares		$ 74.33
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value \| $		$ 14.1	$ 7.2	$ 6.5
Number of shares, granted		170,411	159,831	235,480
Number of shares, vested		258,307	164,913	169,279
Cash Settled RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share price \| $ / shares		$ 74.33
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value \| $		$ 9.3	$ 7.2	$ 7.7
Number of shares, granted		134,259	103,606	147,103
Number of shares, vested		154,653	123,395	147,759
Non-Employee Director Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares, granted				7,985
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share price \| $ / shares		$ 74.33
Number of performance period in performance based share program \| PerformancePeriod		1	2		3	2
Percentage of multiplication award by product		2.00%
Number of shares, granted		87,314	85,928	45,136	88,038
Number of shares, vested		88,038	107,000	30,576
Number of shares, granted, adjusted for partial performance periods					94,178
Number of shares, expected to vest		94,178
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected forfeiture rate		0.00%
Minimum \| Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period		3 years
Minimum \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period		3 years
Minimum \| Cash Settled RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period		3 years
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected forfeiture rate		17.75%
Maximum \| Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period		4 years
Maximum \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period		4 years
Maximum \| Cash Settled RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period		4 years
Omnibus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares grants	1,600,000	90,742
Share-based compensation arrangement by share-based payment award, number of additional awards		0
Share-based compensation arrangement by share-based payment award, number of shares available for grant		1,107,968
Share-based compensation arrangement by share-based payment award, options, outstanding, weighted average remaining contractual term		10 years
Omnibus Plan \| Non-Employee Director Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share price \| $ / shares		$ 74.33
Number of shares, granted		12,541	9,732	11,606
Number of shares, vested		10,891	9,840	5,395