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Business Acquisitions and Assets and Liabilities Held for Sale (Details) $ in Millions |  | 6 Months Ended |
--- | --- | --- | ---
Jun. 09, 2020 USD ($) | Jun. 30, 2020 USD ($) acquisition | Dec. 31, 2019 USD ($)
Business Acquisition [Line Items] |  |  |
Number of business acquisitions | acquisition |  | 2 |
Acquisition consideration |  | $ 150.0 |
Goodwill |  | $ 10,846.6 | $ 10,815.4
Freight Market Intelligence Consortium |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill | $ 80.5 |  |
Intangible assets acquired | 70.2 |  |
Freight Market Intelligence Consortium | Customer related intangibles |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets acquired | $ 62.9 |  |
Weighted average useful life of intangible assets acquired | 15 years |  |
Freight Market Intelligence Consortium | Technology |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets acquired | $ 7.3 |  |
Weighted average useful life of intangible assets acquired | 5 years |  |

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