Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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- Definition

Amount of cost for defined contribution plan.

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-SubTopic 70
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- Definition

Pension Plans, Postretirement and Other Employee Benefits [Line Items]

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No definition available.

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Retirement Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Expense related to defined contribution plan	$ 49.6	$ 52.6	$ 48.9
Foreign [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Contribution towards defined benefit plans	$ 21.0
Minimum [Member] \| U.S. and Puerto Rico [Member] \| Equity Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	30.00%
Minimum [Member] \| U.S. and Puerto Rico [Member] \| Debt Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	30.00%
Minimum [Member] \| U.S. and Puerto Rico [Member] \| Non-Traditional Investments [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	0.00%
Minimum [Member] \| Foreign [Member] \| Equity Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	20.00%
Minimum [Member] \| Foreign [Member] \| Debt Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	30.00%
Minimum [Member] \| Foreign [Member] \| Real Estate [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	15.00%
Minimum [Member] \| Foreign [Member] \| Cash Fund [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	3.00%
Minimum [Member] \| Foreign [Member] \| Other Funds [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	0.00%
Maximum [Member] \| U.S. and Puerto Rico [Member] \| Equity Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	65.00%
Maximum [Member] \| U.S. and Puerto Rico [Member] \| Debt Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	50.00%
Maximum [Member] \| U.S. and Puerto Rico [Member] \| Non-Traditional Investments [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	15.00%
Maximum [Member] \| Foreign [Member] \| Equity Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	37.00%
Maximum [Member] \| Foreign [Member] \| Debt Securities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	50.00%
Maximum [Member] \| Foreign [Member] \| Real Estate [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	24.00%
Maximum [Member] \| Foreign [Member] \| Cash Fund [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	15.00%
Maximum [Member] \| Foreign [Member] \| Other Funds [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Target range of assets held by defined benefit plan for cash funds	12.00%