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Employees - Schedule of Sensitivity of Pension Liabilities to Changes in Weighted Key Assumptions (Detail) | 12 Months Ended
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Dec. 31, 2017
Discount Rate [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in assumption | Increase by 0.5%
Change in liabilities | (7.00%)
Discount Rate [member] | United Kingdom [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in liabilities | (8.00%)
Discount Rate [member] | Netherlands [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in liabilities | (9.00%)
Inflation Rate [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in assumption | Increase by 0.5%
Change in liabilities | 6.00%
Inflation Rate [member] | United Kingdom [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in liabilities | 7.00%
Inflation Rate [member] | Netherlands [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in liabilities | 9.00%
Life expectancy [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in assumption | Increase by 1 year
Change in liabilities | 4.00%
Life expectancy [member] | United Kingdom [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in liabilities | 4.00%
Life expectancy [member] | Netherlands [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in liabilities | 4.00%
Long-Term Medical Cost Inflation [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in assumption | Increase by 1.0%
Change in liabilities | 1.00%
Long-Term Medical Cost Inflation [member] | United Kingdom [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in liabilities | 0.00%
Long-Term Medical Cost Inflation [member] | Netherlands [member] |
Disclosure of sensitivity analysis for actuarial assumptions [Line Items] |
Change in liabilities | 0.00%

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- Definition The description of changes in the methods and assumptions used in preparing a sensitivity analysis for significant actuarial assumptions. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2016-01-13 -Paragraph 145 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2016-03-30&anchor=para_145_c&doctype=Standard -URIDate 2016-03-31 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition Change in pension liabilities as a result of change in life expectancy assumptions. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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