v3.26.1
Segmental information - Other information (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Disclosure of operating segments [line items]      
Purchase of property, plant and equipment and computer software $ 1,197 $ 1,612 $ 1,510
Depreciation and intangible asset amortisation (745) (748) (677)
Impairment of associates and joint ventures (4)   (1)
Exceptional accelerated depreciation and impairment of tangible assets (352) (174) (46)
Exceptional impairment of intangible assets (1,314) (416) 229
Exceptional impairment of associates and joint ventures (65) (380)  
Operating segments | North America      
Disclosure of operating segments [line items]      
Purchase of property, plant and equipment and computer software 250 435 305
Depreciation and intangible asset amortisation (176) (186) (161)
Impairment of associates and joint ventures (4)   0
Exceptional accelerated depreciation and impairment of tangible assets (213) (66) (33)
Exceptional impairment of intangible assets (91) (365) (54)
Exceptional impairment of associates and joint ventures (19) (215)  
Operating segments | Europe      
Disclosure of operating segments [line items]      
Purchase of property, plant and equipment and computer software 429 423 338
Depreciation and intangible asset amortisation (319) (272) (265)
Impairment of associates and joint ventures 0   0
Exceptional accelerated depreciation and impairment of tangible assets (35) (96) (5)
Exceptional impairment of intangible assets (1,163) (51) (96)
Exceptional impairment of associates and joint ventures (7) (142)  
Operating segments | Asia Pacific      
Disclosure of operating segments [line items]      
Purchase of property, plant and equipment and computer software 95 79 154
Depreciation and intangible asset amortisation (119) (135) (111)
Impairment of associates and joint ventures 0   0
Exceptional accelerated depreciation and impairment of tangible assets (4) (9) (8)
Exceptional impairment of intangible assets 0 0 379
Exceptional impairment of associates and joint ventures (39) (23)  
Operating segments | Latin America and Caribbean      
Disclosure of operating segments [line items]      
Purchase of property, plant and equipment and computer software 2 5 6
Depreciation and intangible asset amortisation (39) (38) (33)
Impairment of associates and joint ventures 0   (1)
Exceptional accelerated depreciation and impairment of tangible assets (100) (3) 0
Exceptional impairment of intangible assets (60) 0 0
Exceptional impairment of associates and joint ventures 0 0  
Operating segments | Africa      
Disclosure of operating segments [line items]      
Purchase of property, plant and equipment and computer software 50 88 83
Depreciation and intangible asset amortisation (75) (101) (94)
Impairment of associates and joint ventures 0   0
Exceptional accelerated depreciation and impairment of tangible assets 0 0 0
Exceptional impairment of intangible assets 0 0 0
Exceptional impairment of associates and joint ventures 0 0  
Corporate and other      
Disclosure of operating segments [line items]      
Purchase of property, plant and equipment and computer software 371 582 624
Depreciation and intangible asset amortisation (17) (16) (13)
Impairment of associates and joint ventures 0   0
Exceptional accelerated depreciation and impairment of tangible assets 0 0 0
Exceptional impairment of intangible assets 0 0 $ 0
Exceptional impairment of associates and joint ventures $ 0 $ 0