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Restructuring and Other Impairment Activities - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring and other impairment expense |  | $ 22.6 | $ 19.1 | $ 1.9
Restructuring, settlement and other impairment provisions |  | $ 22.6 | 19.1 | 1.9
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Restructuring, settlement and other impairment provisions |  |
Proceeds from sale of assets |  | $ 0.0 | 7.5 | 35.2
Other restructuring costs |  | 2.7 |  |
Other Current Assets |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Asset, held-for-sale,Other assets |  | 14.2 | 10.5 |
Other Noncurrent Assets |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Asset, held-for-sale,Other assets |  | 2.2 |  |
Unallocated |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring, settlement and other impairment provisions |  | 1.1 | 0.0 | 0.0
FBS |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring and other impairment expense |  | 9.9 | 1.1 |
Fiber-Based Solutions (FBS) | Equipment |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring, settlement and other impairment provisions |  | 9.5 |  |
ATM |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring and other impairment expense |  | 12.4 | 17.2 | $ 1.9
Impairment long-lived asset |  | 8.8 |  |
Restructuring incurred to date |  | 8.8 |  |
Impairment of certain assets divested |  | 12.9 |  |
Proceeds from sale of assets | $ 4.6 |  |  |
Loss from sales of other miscellaneous remaining assets | $ 0.4 |  |  |
ATM | Facility Closing |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring incurred to date |  | 2.0 | $ 3.2 |
Restructuring and related cost, expected cost |  | $ 4.7 |  |

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