Employee Benefits - Estimated Future Benefit Payments (Detail) $ in Millions	Dec. 31, 2019 USD ($)
Supplemental Plan
Schedule of Pension Expected Future Benefit Payments [Line Items]
2020	$ 15.0
2021	16.7
2022	18.4
2023	20.3
2024	16.2
2025-2029	60.8
U.S. Plan \| Pension Plans, Defined Benefit
Schedule of Pension Expected Future Benefit Payments [Line Items]
2020	81.0
2021	82.9
2022	84.3
2023	91.1
2024	89.6
2025-2029	469.7
Non U.S. Plans \| Pension Plans, Defined Benefit
Schedule of Pension Expected Future Benefit Payments [Line Items]
2020	3.9
2021	4.2
2022	4.2
2023	4.6
2024	4.9
2025-2029	$ 29.9

Schedule of Pension Expected Future Benefit Payments [Line Items]

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- Definition

Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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- Definition

Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

+ References

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

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