CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parentheticals) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	[1]	$ 1.4	$ 1.7

[1] The tax expense included in pension and postretirement adjustments for the three months ended March 31, 2022 and 2021 was $1.4 million and $1.7 million, respectively.