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Employee Information - Summary of Average Number of Employees (Detail) - Employee | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure of Information About Employees [line items] |  |
Average number of employees | 100,757 | 98,589
Women [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 24,722 | 23,644
Men [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 76,035 | 74,945
South East Asia, Oceania and India [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 26,298 | 25,331
South East Asia, Oceania and India [member] | Women [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 5,470 | 5,025
South East Asia, Oceania and India [member] | Men [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 20,828 | 20,306
North East Asia [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 13,902 | 13,876
North East Asia [member] | Women [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 4,579 | 4,532
North East Asia [member] | Men [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 9,323 | 9,344
North America [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 10,268 | 9,710
North America [member] | Women [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 2,269 | 2,075
North America [member] | Men [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 7,999 | 7,635
Europe and Latin America [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 45,917 | 45,431
Europe and Latin America [member] | Women [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 11,581 | 11,205
Europe and Latin America [member] | Men [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 34,336 | 34,226
Middle East and Africa [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 4,372 | 4,241
Middle East and Africa [member] | Women [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 823 | 807
Middle East and Africa [member] | Men [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 3,549 | 3,434
Sweden [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 13,410 | 12,620
Sweden [member] | Women [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 3,173 | 2,911
Sweden [member] | Men [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 10,237 | 9,709
Of which in EU [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 34,699 | 34,273
Of which in EU [member] | Women [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 8,728 | 8,462
Of which in EU [member] | Men [member] |  |
Disclosure of Information About Employees [line items] |  |
Average number of employees | 25,971 | 25,811

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- Definition The average number of personnel employed by the entity during a period. + 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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