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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

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