Schedule of Pension Plans with Accumulated Benefit Obligation and Projected Benefit Obligation in Excess of Plan Assets (Detail) - USD ($) $ in Millions |
Dec. 31, 2018 |
Dec. 31, 2017 |
---|---|---|
Defined Benefit Plan Disclosure | ||
Fair value of plan assets | ||
UNITED STATES | ||
Defined Benefit Plan Disclosure | ||
Projected benefit obligation | 50.8 | $ 56.0 |
Accumulated benefit obligation | 48.6 | 51.6 |
Foreign Pension Plans, Defined Benefit | ||
Defined Benefit Plan Disclosure | ||
Projected benefit obligation | 39.1 | 39.4 |
Accumulated benefit obligation | 35.6 | 34.7 |
Fair value of plan assets | $ 1.4 | $ 1.3 |