Annual report pursuant to Section 13 and 15(d)

BENEFIT PLANS - Amount of Prior Service Cost and Actuarial Loss Included in Accumulated Other Comprehensive Loss that is Expected to Be Recognized in Net Periodic Benefit Cost (Details)

v3.19.3.a.u2
BENEFIT PLANS - Amount of Prior Service Cost and Actuarial Loss Included in Accumulated Other Comprehensive Loss that is Expected to Be Recognized in Net Periodic Benefit Cost (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Pension Benefits  
Defined Benefit Plan Disclosure [Line Items]  
Actuarial loss, net of taxes of $4.8 for pension benefits and $0.2 for other benefits $ 14.8
Prior service cost, net of taxes of $(0.1) for pension benefits and $(0.1) for other benefits (0.1)
Actuarial loss, taxes 4.8
Prior service cost, taxes (0.1)
Other Benefits  
Defined Benefit Plan Disclosure [Line Items]  
Actuarial loss, net of taxes of $4.8 for pension benefits and $0.2 for other benefits 0.5
Prior service cost, net of taxes of $(0.1) for pension benefits and $(0.1) for other benefits (0.1)
Actuarial loss, taxes 0.2
Prior service cost, taxes $ (0.1)