Income Taxes - Valuation allowance (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Valuation allowance
Valuation allowance	$ 23.8	$ 20.3
Undistributed earnings of the Company's foreign subsidiaries	94.0
Foreign Tax Credits
Valuation allowance
Valuation allowance	16.8	12.8
Foreign \| Operating Losses
Valuation allowance
Valuation allowance	$ 5.4	$ 5.8

Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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