Represents the number of equal annual installments over which the awards vest, from date of grant.

No definition available.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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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.

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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 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.

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

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Stock and Stock-Based Compensation Plan Summary (Details) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) shares	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) installment $ / shares shares	Sep. 30, 2023 USD ($)
Stock and Stock-Based Compensation Plans
Stock-based compensation expense (in dollars)	$ 3.8	$ 4.2	$ 13.9	$ 13.1
PRSUs
Stock and Stock-Based Compensation Plans
Stock-based compensation expense (in dollars)	1.5	1.5	6.7	3.4
RSUs
Stock and Stock-Based Compensation Plans
Stock-based compensation expense (in dollars)	1.7	1.9	6.8	7.1
Service options
Stock and Stock-Based Compensation Plans
Stock-based compensation expense (in dollars)	0.2	0.2	0.5	0.5
Market Options
Stock and Stock-Based Compensation Plans
Stock-based compensation expense (in dollars)	$ 0.4	$ 0.6	$ (0.1)	$ 2.1
OPENLANE, Inc. 2009 Omnibus Stock and Incentive Plan
Stock and Stock-Based Compensation Plans
Maximum number of shares to be issued pursuant to awards \| shares	6.5		6.5
OPENLANE, Inc. 2009 Omnibus Stock and Incentive Plan \| PRSUs
Stock and Stock-Based Compensation Plans
PRSUs and/or RSUs grants \| shares			0.6
OPENLANE, Inc. 2009 Omnibus Stock and Incentive Plan \| RSUs
Stock and Stock-Based Compensation Plans
PRSUs and/or RSUs grants \| shares			0.6
Number of equal annual installments \| installment			3
PRSUs and/or RSUs grant date fair value \| $ / shares			$ 14.73
OPENLANE, Inc. 2009 Omnibus Stock and Incentive Plan \| PRSUs - Adjusted EBITDA
Stock and Stock-Based Compensation Plans
PRSUs vesting period			3 years
PRSUs and/or RSUs grant date fair value \| $ / shares			$ 14.73
OPENLANE, Inc. 2009 Omnibus Stock and Incentive Plan \| PRSUs - TSR PRSUs
Stock and Stock-Based Compensation Plans
PRSUs vesting period			3 years
PRSUs and/or RSUs grant date fair value \| $ / shares			$ 21.28