XML 101 R88.htm IDEA: XBRL DOCUMENT v3.23.3
Commitment and Contingencies - Reconciliation of Cash and Cash Equivalents (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Aug. 12, 2023
Aug. 11, 2023
Dec. 31, 2022
Sep. 30, 2022
Dec. 31, 2021
Reorganization, Chapter 11 [Line Items]            
Cash and cash equivalents $ 376.1 $ 391.4 $ 391.4 $ 307.4 $ 128.4  
Professional fee escrow 22.9          
Bank collateral guarantees 32.4          
Pension collateral guarantees 8.9          
Restricted cash and cash equivalents 64.2          
Cash, cash equivalents and restricted cash $ 440.3   452.2 319.1 $ 128.4 $ 388.9
Predecessor            
Reorganization, Chapter 11 [Line Items]            
Cash and cash equivalents     $ 404.9 307.4    
Professional fee escrow       0.0    
Bank collateral guarantees       2.6    
Pension collateral guarantees       9.1    
Restricted cash and cash equivalents       11.7    
Cash, cash equivalents and restricted cash       $ 319.1