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Stock-Based Compensation Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Apr. 03, 2023	Dec. 31, 2021	Dec. 31, 2018	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	464,000	511,000	0
Total net cash received from option exercises	$ 3.3	$ 5.0	$ 0.0
Total cash received from option exercises	0.0	32.5	135.0
Tax benefit realized for tax deductions from option exercises	0.4	0.4	0.3
Total future compensation costs related to unvested share-based awards	3.4
Tax benefit for vesting of restricted share units	1.2	0.9	0.8
Performance-Based Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Modification liability	$ 1.6	1.9
Vesting period	3 years
Maximum payout potential if shareholder return is negative (percent)	100.00%
Performance-Based Restricted Share Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout potential (percent)	0.00%
Performance-Based Restricted Share Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout potential (percent)	200.00%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 1.4	4.8	1.9
Vesting period	4 years
Options expiration period	10 years
Historical volatility period	4 years
Total cash received from option exercises		1.6
Total future compensation costs related to awards, weighted-average period	2 years 3 months 29 days
Stock Options \| Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Stock Options \| Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Stock Options \| Share-Based Payment Arrangement, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Stock Options \| Share-Based Payment Arrangement, Tranche Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Tax benefit for vesting of restricted share units	$ 0.8	0.5	0.5
Restricted Share Units \| Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Restricted Share Units \| Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Restricted Share Units \| Share-Based Payment Arrangement, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Restricted Share Units \| Share-Based Payment Arrangement, Tranche Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Restricted Share Units and Performance-Based Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 9.2	$ 5.5	$ 7.4
Total future compensation costs related to awards, weighted-average period	1 year 11 months 8 days
Total future compensation costs related to restricted share unit and performance-based restricted share unit awards	$ 15.8
Crane NXT, Co. Stock-Based Compensation Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)				500,000
SpinCo Stock-Based Compensation Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)				600,000
2013 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock authorized (in shares)							9,500,000
Further awards to be made (in shares)	0
2018 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock authorized (in shares)						6,500,000
Further awards to be made (in shares)	0
2021 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock authorized (in shares)					4,710,000