Defined Benefit Plan, Group Annuity Contract To Transfer Projected Benefit Obligations, Number Of Retirees

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- Definition

Defined Benefit Plan, Group Annuity Contract To Transfer Projected Benefit Obligations, Purchase Amount

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- Definition

Matching Contribution By Employer As Percentage Of Participants Contribution

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Number of Shares Vesting After Achievement of Goals

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- Definition

Share-based compensation arrangement by share-based payment award, other than options, grants in period, weighted average grant date fair value.

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Share-based compensation arrangement by share-based payment award, other than options, vested in period, weighted average grant date fair value.

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

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The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit.

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- Definition

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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Amount of cost for defined contribution plan.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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

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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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Notice period the entity is required to deliver before it can redeem an investment calculated using net asset value per share, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, investments calculated by per unit, per membership interest, other equity or ownership interest and alternative investments.

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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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Employee plans - Narrative (Details) $ in Millions	1 Months Ended			12 Months Ended
Employee plans - Narrative (Details) $ in Millions	Mar. 31, 2024 USD ($) retiree	Nov. 30, 2023 USD ($) retiree	Mar. 31, 2023 USD ($) retiree	Dec. 31, 2024 USD ($) shares	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of unissued common stock available for grant under the plans (in shares) \| shares				8,200,000
Matching contribution by the company as percentage of participants' contribution				50.00%
Percentage of eligible pay contributed by participants that will be matched				6.00%
Cost recognized for contribution plans				$ 6.9	$ 6.6	$ 6.9
Deferred compensation liability				8.0	7.1
Pension Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash pension settlement charge				130.6	348.9
Estimated cash contributions by the company in next fiscal year				92.0
Other Postretirement Benefit Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated cash contributions by the company in next fiscal year				3.0
International Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost recognized for contribution plans				18.2	16.9	16.6
International Plans \| Pension Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash pension settlement charge				0.5	0.7	0.0
United States \| Pension Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Group annuity contract to transfer projected benefit obligations, purchase amount	$ 192.0	$ 253.0	$ 263.0
Group annuity contract to transfer projected benefit obligations, number of retirees \| retiree	3,800	3,900	8,650
Non-cash pension settlement charge	$ 130.1	$ 167.2	$ 181.0	$ 130.1	$ 348.2	0.0
Minimum \| United States \| Pension Plans \| Private Real Estate
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Certain investments valued using net asset value as practical expedient, redemption notice period				60 days	60 days
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Certain investments valued using net asset value as practical expedient, redemption notice period				120 days
Maximum \| United States \| Pension Plans \| Private Real Estate
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Certain investments valued using net asset value as practical expedient, redemption notice period				90 days	90 days
Restricted Stock and RSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense				$ 21.2	$ 17.2	20.0
Aggregate weighted-average grant-date fair value of units granted				19.3	17.1	27.0
Total unrecognized compensation cost				$ 14.3
Unrecognized compensation cost, weighted-average recognition period				1 year 6 months
Aggregate weighted-average grant-date fair value of units vested				$ 18.5	$ 9.1	$ 17.4
Performance-Based Unit \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares which will vest after achievement of goals (in shares) \| shares				0
Performance-Based Unit \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares which will vest after achievement of goals (in shares) \| shares				2
Market-Based Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares which will vest after achievement of goals (in shares) \| shares				0
Market-Based Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares which will vest after achievement of goals (in shares) \| shares				2