Share-Based Compensation - Share-Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Share-based compensation expense
Share-based compensation expense before taxes	$ 43.4	$ 37.8	$ 77.3	$ 69.6
Stock options
Share-based compensation expense
Share-based compensation expense before taxes	12.8	11.1	24.3	19.6
Related income tax benefit	(0.3)	(0.2)	(0.5)	(0.4)
Share-based compensation expense, net of taxes	12.5	10.9	23.8	19.2
RSUs
Share-based compensation expense
Share-based compensation expense before taxes	29.7	26.0	51.2	49.4
Related income tax benefit	(4.8)	(4.3)	(8.3)	(8.1)
Share-based compensation expense, net of taxes	24.9	21.7	42.9	41.3
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold \| Stock options
Share-based compensation expense
Share-based compensation expense before taxes	0.0	0.0	0.0	0.0
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold \| RSUs
Share-based compensation expense
Share-based compensation expense before taxes	1.1	1.1	2.1	2.1
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense \| Stock options
Share-based compensation expense
Share-based compensation expense before taxes	0.1	0.1	0.2	0.2
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense \| RSUs
Share-based compensation expense
Share-based compensation expense before taxes	10.3	7.6	15.2	14.3
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense \| Stock options
Share-based compensation expense
Share-based compensation expense before taxes	12.7	11.0	24.1	19.4
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense \| RSUs
Share-based compensation expense
Share-based compensation expense before taxes	$ 18.3	$ 17.3	$ 33.9	$ 33.0

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479983/718-10-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Amount, after tax, of expense for award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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