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Segment Information - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Profit included in operating income | $ 154.0 | $ 87.0 | $ 137.9
ECS | Hardware and Software | Other revenue |  |  |
Segment Reporting Information [Line Items] |  |  |
Profit included in operating income | $ 1.4 | $ 7.8 | $ 5.7

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