The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions that result in remeasurements of the net defined benefit liability (asset). Financial assumptions deal with items such as: (a) the discount rate; (b) benefit levels, excluding any cost of the benefits to be met by employees, and future salary; (c) in the case of medical benefits, future medical costs, including claim handling costs (ie the costs that will be incurred in processing and resolving claims, including legal and adjuster's fees); and (d) taxes payable by the plan on contributions relating to service before the reporting date or on benefits resulting from that service. [Refer: Net defined benefit liability (asset)]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2020-01-01
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- Definition

The increase (decrease) in equity. [Refer: Equity]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 106
-Subparagraph d
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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.

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No definition available.

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- Definition

The amount of employer contributions to retirement benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2020-01-01
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Consolidated statement of comprehensive income (Parenthetical) € in Millions, £ in Millions	1 Months Ended	6 Months Ended
	Mar. 31, 2021 GBP (£)	Jun. 30, 2021 GBP (£)	Jun. 30, 2021 EUR (€)	Jun. 30, 2020 GBP (£)	Jun. 30, 2020 EUR (€)
UBI DAC
Disclosure of transactions between related parties [line items]
Net (loss) gain as a result of significant movements in underlying actuarial assumptions		£ 176	€ 205	£ (90)	€ (101)
Main Scheme
Disclosure of transactions between related parties [line items]
Contribution under the MoU to strengthen funding of the Main section	£ 500
Increase (decrease) in equity	£ (365)
UK Government Investments Ltd \| UBI DAC
Disclosure of transactions between related parties [line items]
Net (loss) gain as a result of significant movements in underlying actuarial assumptions				£ (90)