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Employee Information - Summary of Number of Employees by Market Area (Detail) - Employee | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure of Information About Employees [line items] |  |
Number of employees | 101,322 | 100,824
South East Asia, Oceania and India [member] |  |
Disclosure of Information About Employees [line items] |  |
Number of employees | 26,369 | 25,869
North East Asia [member] |  |
Disclosure of Information About Employees [line items] |  |
Number of employees | 13,091 | 13,944
North America [member] |  |
Disclosure of Information About Employees [line items] |  |
Number of employees | 10,344 | 10,175
Europe and Latin America [member] |  |
Disclosure of Information About Employees [line items] |  |
Number of employees | 47,064 | 46,580
Middle East and Africa [member] |  |
Disclosure of Information About Employees [line items] |  |
Number of employees | 4,454 | 4,256
Sweden [member] |  |
Disclosure of Information About Employees [line items] |  |
Number of employees | 14,183 | 13,173
Of which in EU [member] |  |
Disclosure of Information About Employees [line items] |  |
Number of employees | 35,950 | 35,552

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- Definition The number of personnel employed by the entity at a date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard -URIDate 2021-03-24 + Details
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