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Provisions - additional information (Detail 1) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Disclosure Of Other Provisions [Line Items] |  |  |  |
Balance at the beginning of period |  | $ 2,481 |  |
Increase in provisions recognized in the income statement |  | 267 |  |
Release of provisions recognized in the income statement |  | (34) |  |
Provisions used in conformity with designated purpose |  | (82) |  |
Capitalized reinstatement costs |  | 1 |  |
Reclassifications |  | 0 |  |
Foreign currency translation / unwind of discount |  | 13 |  |
Balance at the end of period |  | 2,646 |  |
Litigation, regulatory and similar matters |  |  |  |
Disclosure Of Other Provisions [Line Items] |  |  |  |
Balance at the beginning of period | [1],[2] | 2,072 |  |
Increase in provisions recognized in the income statement | [1],[2] | 87 |  |
Release of provisions recognized in the income statement | [1],[2] | (24) |  |
Provisions used in conformity with designated purpose | [1],[2] | (27) |  |
Capitalized reinstatement costs | [1] | 0 |  |
Reclassifications | [1] | 0 |  |
Foreign currency translation / unwind of discount | [1],[2] | 11 |  |
Balance at the end of period | [1],[2] | 2,119 |  |
Restructuring |  |  |  |
Disclosure Of Other Provisions [Line Items] |  |  |  |
Balance at the beginning of period |  | 61 |  |
Increase in provisions recognized in the income statement | [3] | 147 |  |
Release of provisions recognized in the income statement | [3] | (6) |  |
Provisions used in conformity with designated purpose | [3] | (23) |  |
Capitalized reinstatement costs | [3] | 0 |  |
Reclassifications | [3] | 1 |  |
Foreign currency translation / unwind of discount | [3] | (2) |  |
Balance at the end of period | [4] | 179 |  |
Personnel-related restructuring provisions |  | 135 | $ 12 | $ 18
Other |  |  |  |
Disclosure Of Other Provisions [Line Items] |  |  |  |
Balance at the beginning of period | [5] | 348 |  |
Increase in provisions recognized in the income statement | [5] | 33 |  |
Release of provisions recognized in the income statement | [5] | (4) |  |
Provisions used in conformity with designated purpose | [5] | (31) |  |
Capitalized reinstatement costs | [5] | 1 |  |
Reclassifications | [5] | (1) |  |
Foreign currency translation / unwind of discount | [5] | 5 |  |
Balance at the end of period |  | 348 |  |
Provisions for onerous restructuring contracts |  | $ 40 | $ 44 | $ 49
[1] | <div>Comprises provisions for losses resulting from legal, liability and compliance risks</div>
[2] | <div>Provisions, if any, for matters described in this Note are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this Note are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this Note in item 5 are allocated between the Investment Bank and Group Functions.</div>
[3] | <div>Includes personnel-related restructuring provisions of USD 135 million as of 30 June 2021 (31 March 2021: USD 12 million; 31 December 2020: USD 18 million) and provisions for onerous contracts of USD 40 million as of 30 June 2021 (31 March 2021: USD 44 million; 31 December 2020: USD 49 million).</div>
[4] | <div>Includes personnel-related restructuring provisions of USD 135 million as of 30 June 2021 (31 March 2021: USD 12 million; 31 December 2020: USD 18 million) and provisions for onerous contracts of USD 40 million as of 30 June 2021 (31 March 2021: USD 44 million; 31 December 2020: USD 49 million).</div>
[5] | <div>Mainly includes provisions related to real estate, employee benefits and operational risks.</div>

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- Definition The amount of additional other provisions made. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in other provisions resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of provisions other than provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_a&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_d&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount reversed for unused other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_d&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The movement in other provisions resulting from capitalized reinstatement costs. + References No definition available. + Details
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- Definition The increase (decrease) in other provisions resulting from (i) foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency; and (ii) adjustments arising from the passage of time. + References No definition available. + Details
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- Definition The amount of provisions for onerous restructuring contracts. An onerous contract is a contract in which the unavoidable costs of meeting the obligation under the contract exceed the economic benefits expected to be received under it. + References No definition available. + Details
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- Definition The amount of personnel-related provision for restructuring, such as the sale or termination of a line of business; closure of business locations in a country or region or relocation of activities from one country or region to another; changes in management structure; and fundamental reorganisations that have a material effect on the nature and focus of the entity's operations. [Refer: Other provisions] + References No definition available. + Details
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