XML 92 R77.htm IDEA: XBRL DOCUMENT v3.20.4
Pension and Post-Employment Benefits - Unfunded Defined Benefit Pension Plan (Detail) - German Plan [Member] - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Plan net pension charge:      
Interest cost on PBO $ 0.1 $ 0.2 $ 0.2
Amortization of actuarial net loss 0.8 0.3 0.4
Plan net pension (credit)/charge $ 0.9 $ 0.5 $ 0.6
Plan assumptions at December 31, (%):      
Discount rate 0.40% 0.80% 1.90%
Inflation rate 1.50% 1.75% 1.75%
Rate of increase in compensation levels 2.75% 2.75% 2.75%