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Discontinued Operations (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Aug. 17, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Gain on sale of discontinued operations |  | $ 0.0 | $ 0.0 | $ 216.9
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] |  |  |  |
Income from discontinued operations, net of income taxes |  | 0.0 | 1.2 | 178.1
Disposal Group, Including Discontinued Operation, Cash Flow Disclosures [Abstract] |  |  |  |
Net cash provided by (used in) investing activities |  | $ 0.0 | 9.8 | 503.8
Oxford Business | Discontinued Operations |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Proceeds from Sale of Property Held-for-sale | $ 525.0 |  |  |
Cash received related to the finalization of the purchase price |  |  | 9.8 |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] |  |  |  |
Revenues |  |  | 324.3 |
Costs of services |  |  | 223.0 |
Gross profit |  |  | 101.3 |
Selling, general, and administrative expenses |  |  | 90.1 |
Amortization of intangible assets |  |  | 0.4 |
Income before income taxes |  |  | 10.8 |
Provision for income taxes |  |  | 1.5 |
Gain on sale, net of income taxes |  |  | 168.8 |
Income from discontinued operations, net of income taxes |  |  | $ 178.1 |
Disposal Group, Including Discontinued Operation, Cash Flow Disclosures [Abstract] |  |  |  |
Net cash provided by (used in) operating activities |  |  |  | (84.0)
Other |  |  |  | 3.9
Net cash provided by (used in) investing activities |  |  |  | $ 499.9

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- Definition 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. + 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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