Discontinued Operations - Summary of Cash Flows from Discontinued Operations (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Change in cash and cash equivalents from discontinued operations	$ (28.8)	$ (12.0)
Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash provided by (used in) operating activities	(1.8)	150.5
Net cash provided by investing activities	1,986.3	(19.0)
Net cash (used in) provided by financing activities	(2,013.3)	(143.5)
Change in cash and cash equivalents from discontinued operations	(28.8)	(12.0)
Cash and cash equivalents from discontinued operations at beginning of period	28.8	35.2
Cash and cash equivalents from discontinued operations at end of period	0.0	23.2
CIT \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash provided by (used in) operating activities	9.0	99.4
Net cash provided by investing activities	1,986.3	(17.4)
Net cash (used in) provided by financing activities	(2,024.1)	(87.1)
Change in cash and cash equivalents from discontinued operations	(28.8)	(5.1)
Cash and cash equivalents from discontinued operations at beginning of period	28.8	23.9
Cash and cash equivalents from discontinued operations at end of period	0.0	18.8
CFT \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash provided by (used in) operating activities	(8.6)	50.7
Net cash provided by investing activities	0.0	(1.6)
Net cash (used in) provided by financing activities	8.6	(56.0)
Change in cash and cash equivalents from discontinued operations	0.0	(6.9)
Cash and cash equivalents from discontinued operations at beginning of period	0.0	11.3
Cash and cash equivalents from discontinued operations at end of period	0.0	4.4
Other \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net cash provided by (used in) operating activities	(2.2)	0.4
Net cash provided by investing activities	0.0	0.0
Net cash (used in) provided by financing activities	2.2	(0.4)
Change in cash and cash equivalents from discontinued operations	0.0	0.0
Cash and cash equivalents from discontinued operations at beginning of period	0.0	0.0
Cash and cash equivalents from discontinued operations at end of period	$ 0.0	$ 0.0

Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; attributable to disposal group, including, but not limited to, discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-8

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-24

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI https://asc.fasb.org/1943274/2147482740/230-10-45-4

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Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
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Increase (decrease) in cash associated with the entity's discontinued operations.

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