Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-06-30 |
As at 2022-06-30 |
As at 2021-06-30 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
6,142,000,000
GBP
|
5,848,000,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
11,512,000,000
GBP
|
11,902,000,000
GBP
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments accounted for using equity method |
3,829,000,000
GBP
|
3,652,000,000
GBP
|
— |
| Trade and other non-current receivables [abstract] | |||
| Other non-current receivables |
31,000,000
GBP
|
37,000,000
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current net defined benefit asset |
960,000,000
GBP
|
1,553,000,000
GBP
|
— |
| Non-current investments other than investments accounted for using equity method |
57,000,000
GBP
|
37,000,000
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
2,720,000,000
GBP
|
2,933,000,000
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
7,661,000,000
GBP
|
7,094,000,000
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
1,439,000,000
GBP
|
2,285,000,000
GBP
|
2,749,000,000
GBP
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
14,801,000,000
GBP
|
14,498,000,000
GBP
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings and current portion of non-current borrowings |
1,701,000,000
GBP
|
1,522,000,000
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Current borrowings and current portion of non-current borrowings, by type [abstract] | |||
| Trade and other non-current payables [abstract] | |||
| Trade and other non-current payables |
368,000,000
GBP
|
380,000,000
GBP
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
5,300,000,000
GBP
|
5,887,000,000
GBP
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current net defined benefit liability |
373,000,000
GBP
|
402,000,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
712,000,000
GBP
|
723,000,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
3,898,000,000
GBP
|
3,550,000,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
35,621,000,000
GBP
|
36,516,000,000
GBP
|
— |
| Liabilities |
26,329,000,000
GBP
|
27,002,000,000
GBP
|
— |
| Assets (liabilities) |
9,292,000,000
GBP
|
9,514,000,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
12,399,000,000
GBP
|
12,934,000,000
GBP
|
— |
| Current liabilities |
7,614,000,000
GBP
|
8,442,000,000
GBP
|
— |
| Assets less current liabilities [abstract] |