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Pension and Other Benefit Plans - Weighted-Average Allocation of Plan Assets and Target Allocation by Asset Category (Detail)	Dec. 31, 2021	Dec. 31, 2020
United States
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	100.00%	100.00%
Target allocation of assets	100.00%	100.00%
International
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	100.00%	100.00%
Target allocation of assets	100.00%	100.00%
Equity securities | United States
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	5.00%	15.00%
Equity securities | United States | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	4.00%
Equity securities | United States | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	8.00%
Equity securities | International
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	23.00%	45.00%
Equity securities | International | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets		20.00%
Equity securities | International | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets		30.00%
Debt securities | United States
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	84.00%	76.00%
Debt securities | United States | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	80.00%
Debt securities | United States | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	90.00%
Debt securities | International
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	53.00%	35.00%
Debt securities | International | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets		50.00%
Debt securities | International | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets		60.00%
Cash and cash equivalents | United States
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	2.00%	3.00%
Cash and cash equivalents | United States | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	0.00%
Cash and cash equivalents | United States | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	3.00%
Cash and cash equivalents | International
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	3.00%	3.00%
Cash and cash equivalents | International | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets		0.00%
Cash and cash equivalents | International | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets		5.00%
Alternative investments | United States
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	9.00%	6.00%
Alternative investments | United States | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	8.00%
Alternative investments | United States | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets	15.00%
Alternative investments | International
Defined Benefit Plan Disclosure [Line Items]
Target allocation of assets	21.00%	17.00%
Alternative investments | International | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets		19.00%
Alternative investments | International | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target Allocation Percentage of Assets		26.00%

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- Definition

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+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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