General Information - Business Combinations and Shutdown and Other Special Charges, Net (Details)
$ in Millions |
|
3 Months Ended |
12 Months Ended |
|
Aug. 01, 2019
facility
mill
|
Mar. 31, 2023
USD ($)
mill
|
Mar. 31, 2020
USD ($)
employee
|
Mar. 31, 2019
USD ($)
|
Dec. 31, 2022
mill
|
Dec. 31, 2020
USD ($)
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
| Charges Associated with Business Combinations |
|
|
$ 1.5
|
$ 2.1
|
|
|
| Shutdown and Other Special Charges |
|
|
4.2
|
4.1
|
|
|
| Exit Activities |
|
|
13.0
|
0.0
|
|
|
| Total |
|
|
$ 18.7
|
$ 6.2
|
|
|
| Number of mills to be closed | employee |
|
|
2
|
|
|
|
| Number of facilities acquired | facility |
2
|
|
|
|
|
|
| Length of program to dismantle and dispose of abandoned assets |
|
|
3 years
|
|
|
|
| Artistic Carton Company |
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
| Number of mills acquired | mill |
1
|
|
|
|
|
|
| Paperboard Mills |
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
| Expected costs associated with closures |
|
|
$ 40.0
|
|
|
|
| Forecast | Facility Closing |
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
| Number of mills to be closed | mill |
|
2
|
|
|
2
|
|
| Forecast | Construction in Progress |
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
| Investment in new CRB Mill |
|
$ 600.0
|
|
|
|
$ 600.0
|