XML 49 R4.htm IDEA: XBRL DOCUMENT v3.24.0.1
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME      
Decrease (increase) in pension and other post-retirement benefits, income tax $ (0.4) $ (0.2) $ 1.2
Unrealized gain of the period tax   $ 0.2 $ 0.3