v3.25.1
Revenue disaggregation and segmental analysis (Details) - EUR (€)
€ in Millions
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Service revenue € 30,758 € 29,912 € 30,318
Equipment revenue 4,577 4,595 4,900
Revenue from contracts with customers 35,335 34,507 35,218
Other revenue 1,983 2,109 2,356
Interest revenue 130 101 98
Total segment revenue 37,448 36,717 37,672
Adjusted EBITDAaL 10,932 11,019 12,424
Amount of total future revenue from the Group's contracts with customers with performance obligations not satisfied 17,297 16,577 16,354
Not later than one year [Member]      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Amount of total future revenue from the Group's contracts with customers with performance obligations not satisfied 10,812 10,488 10,324
Common Functions      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Service revenue 663 559 530
Equipment revenue 57 49 47
Revenue from contracts with customers 720 608 577
Other revenue 1,097 1,256 1,191
Total segment revenue 1,817 1,864 1,768
Adjusted EBITDAaL 45 29 20
Eliminations      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Service revenue (129) (150) (157)
Equipment revenue   (1) (1)
Revenue from contracts with customers (129) (151) (158)
Other revenue (60) (76) (1,105)
Total segment revenue (189) (227) (1,263)
Germany      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Service revenue 10,876 11,453 11,433
Equipment revenue 942 1,132 1,313
Revenue from contracts with customers 11,818 12,585 12,746
Other revenue 345 357 350
Interest revenue 17 15 17
Total segment revenue 12,180 12,957 13,113
Adjusted EBITDAaL 4,384 5,017 5,323
UK      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Service revenue 5,887 5,631 5,358
Equipment revenue 1,109 1,111 1,375
Revenue from contracts with customers 6,996 6,742 6,733
Other revenue 14 54 58
Interest revenue 59 41 33
Total segment revenue 7,069 6,837 6,824
Adjusted EBITDAaL 1,558 1,408 1,350
Other Europe      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Service revenue 4,805 4,722 5,005
Equipment revenue 761 665 602
Revenue from contracts with customers 5,566 5,387 5,607
Other revenue 108 102 117
Interest revenue 20 15 20
Total segment revenue 5,694 5,504 5,744
Adjusted EBITDAaL 1,510 1,516 1,632
Turkey      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Service revenue 2,484 1,746 1,593
Equipment revenue 595 609 475
Revenue from contracts with customers 3,079 2,355 2,068
Other revenue 7 7 4
Total segment revenue 3,086 2,362 2,072
Adjusted EBITDAaL 842 510 424
Africa      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Service revenue 6,172 5,951 6,556
Equipment revenue 1,113 1,030 1,089
Revenue from contracts with customers 7,285 6,981 7,645
Other revenue 472 409 403
Interest revenue 34 30 28
Total segment revenue 7,791 7,420 8,076
Adjusted EBITDAaL € 2,593 € 2,539 2,880
Vantage Towers      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Other revenue     1,338
Total segment revenue     1,338
Adjusted EBITDAaL     € 795