XML 21 R92.htm IDEA: XBRL DOCUMENT v3.20.1
RETIREMENT PLANS - Additional Information (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]    
Retirement benefit obligations discount rate 2.88% 3.98%
Expected actuarial losses included in accumulated other comprehensive loss in net periodic benefit cost in 2020 $ 0.1  
Former Executives    
Defined Benefit Plan Disclosure [Line Items]    
Retirement benefit obligations $ 7.3 $ 6.6