Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-03-31 |
As at 2020-03-31 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
469,000,000
USD
|
502,000,000
USD
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets other than goodwill [abstract] | ||
| Intangible assets other than goodwill |
1,966,000,000
USD
|
1,583,000,000
USD
|
| Goodwill |
5,261,000,000
USD
|
4,543,000,000
USD
|
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||
| Investments in associates reported in separate financial statements |
128,000,000
USD
|
123,000,000
USD
|
| Trade and other non-current receivables [abstract] | ||
| Trade and other non-current receivables |
160,000,000
USD
|
164,000,000
USD
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current net defined benefit asset |
102,000,000
USD
|
83,000,000
USD
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
1,197,000,000
USD
|
1,078,000,000
USD
|
| Categories of non-current financial assets [abstract] | ||
| Non-current financial assets at fair value through other comprehensive income [abstract] | ||
| Non-current financial assets measured at fair value through other comprehensive income |
245,000,000
USD
|
171,000,000
USD
|
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
180,000,000
USD
|
277,000,000
USD
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
3,682,000,000
USD
|
3,916,000,000
USD
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current portion of non-current borrowings |
655,000,000
USD
|
498,000,000
USD
|
| Non-current portion of non-current borrowings, by type [abstract] | ||
| Trade and other non-current payables [abstract] | ||
| Trade and other non-current payables |
159,000,000
USD
|
121,000,000
USD
|
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
1,543,000,000
USD
|
1,430,000,000
USD
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
55,000,000
USD
|
48,000,000
USD
|
| Issued capital [abstract] | ||
| Issued capital |
96,000,000
USD
|
96,000,000
USD
|
| Retained earnings [abstract] | ||
| Retained earnings |
19,207,000,000
USD
|
18,826,000,000
USD
|
| Net assets (liabilities) [abstract] | ||
| Assets (liabilities) |
3,119,000,000
USD
|
2,281,000,000
USD
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
1,431,000,000
USD
|
1,400,000,000
USD
|
| Current liabilities |
2,416,000,000
USD
|
2,224,000,000
USD
|
| Current assets (liabilities) |
985,000,000
USD
|
824,000,000
USD
|
| Assets less current liabilities [abstract] | ||
| Assets less current liabilities |
7,655,000,000
USD
|
6,675,000,000
USD
|