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Net borrowings - Reconciliation of movement in net borrowings (Details) - GBP (£) £ in Millions | 12 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
At beginning of the year | £ 14,137 | £ 12,109 |
Net decrease in cash and cash equivalents before exchange | 581 | 665 | £ 231
Net increase/(decrease) in bonds and other borrowings | 950 | 825 |
Increase in net borrowings from cash flows | 1,531 | 1,490 |
Exchange differences on net borrowings | (159) | 334 |
Other non-cash items | 32 | 204 |
Net borrowings at end of the year | 15,541 | 14,137 | £ 12,109
Cash outflow for derivatives designated in forward point hedges | (2) | (4) |
Non-cash items of fair value changes of CCS and IRS | (34) | (346) |
Non-cash items of lease liabilities | (82) | (183) |
Non-cash items of fair value change of borrowings | £ 84 | £ 331 |

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- Definition Change in net borrowings from cash flow, including cash and cash equivalents change, bonds and other borrowings. + References No definition available. + Details
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- Definition Non-Cash Items of Fair Value Change of Borrowings + References No definition available. + Details
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- Definition Non-Cash Items of Fair Value Changes of CCS and IRS + References No definition available. + Details
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- Definition Payments For Derivatives Designated In Forward Point Hedges + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The increase (decrease) in cash and cash equivalents before the effect of exchange rate changes on cash and cash equivalents held in foreign currencies. [Refer: Cash and cash equivalents; Effect of exchange rate changes on cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2022-03-24 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard -URIDate 2022-03-24 + Details
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