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Segment Reporting - Capital Expenditures (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Other Nonoperating Income (Expense)	$ 0.0	$ (24.9)	$ (7.0)	$ (99.3)
Payments for (Proceeds from) Productive Assets	13.2	29.2	55.4	70.4
Operating Segments
Segment Reporting Information [Line Items]
Other Nonoperating Income (Expense)	7.9	(9.4)	43.8	(68.4)
Payments for (Proceeds from) Productive Assets	8.1	15.1	23.8	29.5
EES
Segment Reporting Information [Line Items]
Other Nonoperating Income (Expense)	1.1	5.4	12.7	13.7
Payments for (Proceeds from) Productive Assets	1.4	0.5	4.4	3.1
CSS
Segment Reporting Information [Line Items]
Other Nonoperating Income (Expense)	7.0	4.9	33.7	40.0
Payments for (Proceeds from) Productive Assets	3.1	10.2	6.4	17.4
UBS
Segment Reporting Information [Line Items]
Other Nonoperating Income (Expense)	(0.2)	(19.7)	(2.6)	(122.1)
Payments for (Proceeds from) Productive Assets	3.6	4.4	13.0	9.0
Corporate Segment
Segment Reporting Information [Line Items]
Other Nonoperating Income (Expense)	(7.9)	(15.5)	(50.8)	(30.9)
Payments for (Proceeds from) Productive Assets	$ 5.1	$ 14.1	$ 31.6	$ 40.9

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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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