XML 71 R56.htm IDEA: XBRL DOCUMENT v3.22.4
Company's Liability for Environmental Obligations (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Environmental Exit Cost [Line Items]    
Total Balance at Beginning of Period $ 2.7 $ 2.1
Additions 2.0 0.9
Less: Payments / Reductions 0.3 0.3
Total Balance at end of Period 4.4 2.7
Less: Current Portion 0.6 0.5
Noncurrent Balance at End of Period $ 3.8 $ 2.2