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Long-term Employee-related Obligations - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Long-term investments earmarked for severance pay liabilities in Israel	$ 82	$ 137
Expected contributions to pension funds	116
2020	7
2021	7
2022	7
2023	7
2024	7
2025 to 2029	$ 41

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Defined benefit plan estimated future discretionary employer contributions in next fiscal year.

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- Definition

Future expected domestic minimum benefit payments year five.

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Future expected domestic minimum benefit payments year four.

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Future expected domestic minimum benefit payments year one.

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Future expected domestic minimum benefit payments year three.

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Future expected domestic minimum benefit payments year two.

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Future expected domestic minimum benefit payments years six through ten.

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Long-term investments earmarked for domestic severance obligations.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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