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Discontinued Operations - Summary of Cash Flows from Discontinued Operations (Details) - USD ($) $ in Millions | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Change in cash and cash equivalents from discontinued operations | $ 0.0 | $ (28.8)
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 operating activities | 3.5 | 14.1
Net cash provided by investing activities | 0.0 | 1,983.6
Net cash used in financing activities | (3.5) | (2,026.5)
Change in cash and cash equivalents from discontinued operations | 0.0 | (28.8)
Cash and cash equivalents from discontinued operations at beginning of period | 0.0 | 28.8
Cash and cash equivalents from discontinued operations at end of period | 0.0 | 0.0
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 operating activities | 0.8 | 20.0
Net cash provided by investing activities | 0.0 | 1,983.6
Net cash used in financing activities | (0.8) | (2,032.4)
Change in cash and cash equivalents from discontinued operations | 0.0 | (28.8)
Cash and cash equivalents from discontinued operations at beginning of period | 0.0 | 28.8
Cash and cash equivalents from discontinued operations at end of period | 0.0 | 0.0
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 operating activities | 2.7 | (5.9)
Net cash provided by investing activities | 0.0 | 0.0
Net cash used in financing activities | (2.7) | 5.9
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

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- Definition Amount of cash and cash equivalent, and cash and cash equivalent restricted to withdrawal or usage; attributable to discontinued operation. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. + References 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 -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-4 + Details
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- Definition Amount of cash inflow (outflow) from financing activity attributable to discontinued operation. Financing activity includes, but is not limited to, obtaining resource from owner and providing return on, and return of, their investment; borrowing money and repaying amount borrowed, or settling obligation; and obtaining and paying for other resource obtained from creditor on long-term credit. + References Reference 1: 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 + Details
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- Definition Amount of cash inflow (outflow) from investing activity attributable to discontinued operation. Investing activity includes, but is not limited to, making and collecting loan, acquiring and disposing of debt and equity instruments, property, plant, and equipment, and other productive assets. + References Reference 1: 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 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5B -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483499/205-20-50-5B + Details
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