Number of common shares of the entity that have been issued in settlement of vested units.

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Represents the duration of performance targets.

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No definition available.

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The number of shares of common stock to be issued for settlement of nonvested units outstanding.

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No definition available.

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- Definition

Represents the number of stock grants made during the period on the basis of service and performance criteria 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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No definition available.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, to be settled through issuance of common stock.

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No definition available.

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Consists of the right to receive share of common stock.

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No definition available.

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- Definition

Amount of decrease to equity for grantee's tax withholding obligation for award under share-based payment arrangement.

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No definition available.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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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.

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No definition available.

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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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

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

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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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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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

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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No definition available.

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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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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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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Stock-Based Compensation Plans - RSUs and PSUs (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Feb. 28, 2023
Additional share-based compensation disclosures
Total unrecognized compensation cost			$ 73.9
Unvested RSUs and PSUs expected to be settled through issuance of common stock (in units)			582,012
Common stock to be issued for settlement of unvested RSUs and PSUs (in shares)			802,184
Weighted average recognition period for unrecognized compensation cost (in years)			1 year 8 months 12 days
RSUs, 2022 grants
Units
The number of grants made during the period on the basis of service and/or performance criteria other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).			192,798
Share of common stock			1
RSUs, 2021 grant
Units
The number of grants made during the period on the basis of service and/or performance criteria other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).				191,139
Share of common stock				1
RSUs, 2020 grant
Units
The number of grants made during the period on the basis of service and/or performance criteria other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).					330,144
Share of common stock					1
PSUs, 2022 grants
Units
The number of grants made during the period on the basis of service and/or performance criteria other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).			112,451
PSUs, 2021 grant
Units
The number of grants made during the period on the basis of service and/or performance criteria other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).				127,356
PSUs, 2020 grant
Units
The number of grants made during the period on the basis of service and/or performance criteria other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).					210,403
PSUs, 2019 grant
Changes
Vested (in units)			(196,944)
Settled (in shares)						(393,888)
Restricted stock units (RSUs) and performance stock units (PSUs)
Units
Payments to tax authorities on employees' behalf for shares withheld related to share settlements			$ 39.7	$ 21.2	$ 23.1
Changes
Unvested at the beginning of the year (in units)		582,012	831,597
Granted (in shares)			305,249	318,495	540,547
Vested (in units)			(518,743)
Cancelled or forfeited (in units)			(36,091)
Unvested at the end of the period (in units)			582,012	831,597
Weighted Average Grant Date Fair Value
Unvested at the beginning of the year (in dollars per unit)		$ 164.60	$ 105.12
Granted (in dollars per unit)			187.31	$ 141.41	$ 82.81
Vested (in dollars per unit)			84.82
Cancelled or forfeited (in dollars per unit)			132.95
Unvested at the end of the period (in dollars per unit)			$ 164.60	$ 105.12
Additional share-based compensation disclosures
Fair value of vested units			$ 147.2	$ 126.0	$ 54.0
Performance stock units (PSUs)
Units
Vesting period (in years)			3 years
Performance target period (in years)	3 years	3 years	3 years
Maximum \| PSUs, 2022 grants
Units
Share of common stock			2
Maximum \| PSUs, 2021 grant
Units
Share of common stock				2
Maximum \| PSUs, 2020 grant
Units
Share of common stock					2
Directors Equity Plan \| Stock Awards
Changes
Granted (in shares)			6,136	6,248	12,807
Weighted Average Grant Date Fair Value
Granted (in dollars per unit)			$ 182.41	$ 166.39	$ 91.30