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Income Taxes - Reconciliation of Beginning and Ending of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Unrecognized Tax Benefits
Balance at beginning of period		$ 270.5	$ 344.6
Increase related to current period tax positions	[1]	0.4	1.6
Increase related to prior period tax positions		2.7
Decrease related to prior period tax positions		(0.5)	(16.5)
Decrease due to settlements with taxing authorities			(2.2)
Decrease due to lapse of applicable statute of limitations		(3.7)	(55.0)
Decrease due to effects of foreign currency exchange rates			(2.0)
Balance at end of period		$ 269.4	$ 270.5
[1] Includes recurring accruals for issues which initially arose in previous periods

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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.

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A

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Amount of decrease in unrecognized tax benefits resulting from foreign currency translation.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
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-Section 50
-Paragraph 15A
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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-Name Accounting Standards Codification
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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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