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Long-term Employee-related Obligations - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Long-term investments earmarked for severance pay liabilities in Israel	$ 86	$ 82
Expected contributions to pension funds	116
2021	13
2022	12
2023	12
2024	11
2025	12
2026 to 2030	$ 65

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- Definition

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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