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Discontinued Operations - Schedule of Assets and Liabilities From Discontinued Operations (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Disposal Group, Including Discontinued Operation, Assets [Abstract] |  |  |  |  |
Current assets held for sale | $ 1,111.3 |  | $ 1,111.3 |  | $ 1,078.0
Assets held for sale | 0.0 |  | 0.0 |  | 804.9
Disposal Group, Including Discontinued Operation, Liabilities [Abstract] |  |  |  |  |
Current liabilities held for sale | 232.4 |  | 232.4 |  | 340.1
Held-for-sale or Disposed of by Sale | TransCore Holdings Inc, Zetec and Civco Radiotherapy |  |  |  |  |
Disposal Group, Including Discontinued Operation, Assets [Abstract] |  |  |  |  |
Accounts receivable, net |  |  |  |  | 74.7
Inventories, net |  |  |  |  | 47.8
Unbilled receivables |  |  |  |  | 158.2
Goodwill |  |  |  |  | 405.5
Other intangible assets, net |  |  |  |  | 31.0
Other current assets |  |  |  |  | 71.4
Current assets held for sale |  |  |  |  | 788.6
Disposal Group, Including Discontinued Operation, Liabilities [Abstract] |  |  |  |  |
Accounts payable |  |  |  |  | 40.3
Accrued compensation |  |  |  |  | 27.0
Deferred taxes |  |  |  |  | 29.5
Other current liabilities |  |  |  |  | 62.3
Current liabilities held for sale |  |  |  |  | 159.1
Stock-based compensation expense |  |  | 4.5 |  |
Held-for-sale or Disposed of by Sale | TransCore Holdings Inc, Zetec and Civco Radiotherapy | Selling, General and Administrative Expenses |  |  |  |  |
Disposal Group, Including Discontinued Operation, Liabilities [Abstract] |  |  |  |  |
Stock-based compensation expense |  | $ 0.5 | 0.9 | $ 1.8 |
Held-for-sale or Disposed of by Sale | Industrial Businesses |  |  |  |  |
Disposal Group, Including Discontinued Operation, Assets [Abstract] |  |  |  |  |
Accounts receivable, net | 161.1 |  | 161.1 |  | 151.8
Inventories, net | 133.1 |  | 133.1 |  | 106.9
Deferred taxes | 48.5 |  | 48.5 |  | 0.0
Goodwill | 597.0 |  | 597.0 |  | 0.0
Other intangible assets, net | 72.8 |  | 72.8 |  | 0.0
Other current assets | 98.8 |  | 98.8 |  | 30.7
Current assets held for sale | 1,111.3 |  | 1,111.3 |  | 289.4
Goodwill | 0.0 |  | 0.0 |  | 618.2
Other intangible assets, net | 0.0 |  | 0.0 |  | 79.4
Deferred taxes | 0.0 |  | 0.0 |  | 51.1
Other assets | 0.0 |  | 0.0 |  | 56.2
Assets held for sale | 0.0 |  | 0.0 |  | 804.9
Disposal Group, Including Discontinued Operation, Liabilities [Abstract] |  |  |  |  |
Accounts payable | 64.4 |  | 64.4 |  | 52.5
Accrued compensation | 34.7 |  | 34.7 |  | 47.9
Deferred revenue | 24.5 |  | 24.5 |  | 23.9
Deferred taxes | 20.1 |  | 20.1 |  | 0.0
Income taxes payable | 13.4 |  | 13.4 |  | 14.7
Operating lease liabilities | 23.0 |  | 23.0 |  | 0.0
Other current liabilities | 52.3 |  | 52.3 |  | 42.0
Current liabilities held for sale | 232.4 |  | 232.4 |  | 181.0
Deferred taxes | 0.0 |  | 0.0 |  | 13.3
Operating lease liabilities | 0.0 |  | 0.0 |  | 24.1
Other liabilities | 0.0 |  | 0.0 |  | 12.0
Liabilities held for sale | 0.0 |  | 0.0 |  | $ 49.4
Stock-based compensation expense | $ 2.6 | $ 3.4 | $ 5.5 | $ 6.0 |

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