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Provisions - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Statement [Line Items] |  |  |
Insurance revenue | $ 17 | $ 19 | $ 19
Claims expense | 14 | $ 16 | $ 18
Prior period potential exposure for individual insurance claims | 4 |  |
Potential exposure to aggregate insurance claims since 2011 | 62 |  |
Potential exposure to last five policy years insurance claims | 53 |  |
Reinsurance contracts held [member] |  |  |
Statement [Line Items] |  |  |
Claims incurred but not reported | $ 28 |  |

X
- Definition The amount of liability for insured events that have occurred but for which claims have yet not been reported by policyholders. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph IG22 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_IG22_c&doctype=Implementation%20Guidance&book=b -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 37 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_37_b&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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Period Type: | instant

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- Definition The amount of expense arising from insurance contracts. [Refer: Types of insurance contracts [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 37 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_37_b&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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- Definition The amount of income arising from insurance contracts. [Refer: Types of insurance contracts [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 37 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_37_b&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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- Definition Potential exposire to aggregate insurance claims since 2011. + References No definition available. + Details
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- Definition Potential exposure to individual insurance claims prior to 2011. + References No definition available. + Details
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- Definition Potential exposure to last five policy years insurance claims. + References No definition available. + Details
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- Definition Statement [Line Items] + References No definition available. + Details
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- Details
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Balance Type: |
Period Type: |