Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-03-31 |
As at 2021-03-31 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
415,000,000
USD
|
469,000,000
USD
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets other than goodwill [abstract] | ||
| Intangible assets other than goodwill |
2,214,000,000
USD
|
1,966,000,000
USD
|
| Goodwill |
5,737,000,000
USD
|
5,261,000,000
USD
|
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||
| Investments in associates reported in separate financial statements |
4,000,000
USD
|
128,000,000
USD
|
| Trade and other non-current receivables [abstract] | ||
| Trade and other non-current receivables |
133,000,000
USD
|
160,000,000
USD
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current net defined benefit asset |
216,000,000
USD
|
102,000,000
USD
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
1,409,000,000
USD
|
1,197,000,000
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 |
375,000,000
USD
|
245,000,000
USD
|
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
179,000,000
USD
|
180,000,000
USD
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | ||
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
41,000,000
USD
|
—
USD
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
4,039,000,000
USD
|
3,682,000,000
USD
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current portion of non-current borrowings |
57,000,000
USD
|
655,000,000
USD
|
| Non-current portion of non-current borrowings, by type [abstract] | ||
| Trade and other non-current payables [abstract] | ||
| Trade and other non-current payables |
248,000,000
USD
|
159,000,000
USD
|
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
1,744,000,000
USD
|
1,543,000,000
USD
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
52,000,000
USD
|
55,000,000
USD
|
| Issued capital [abstract] | ||
| Issued capital |
96,000,000
USD
|
96,000,000
USD
|
| Retained earnings [abstract] | ||
| Retained earnings |
20,157,000,000
USD
|
19,207,000,000
USD
|
| Net assets (liabilities) [abstract] | ||
| Assets (liabilities) |
4,007,000,000
USD
|
3,119,000,000
USD
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
1,673,000,000
USD
|
1,431,000,000
USD
|
| Current liabilities |
1,965,000,000
USD
|
2,416,000,000
USD
|
| Current assets (liabilities) |
292,000,000
USD
|
985,000,000
USD
|
| Assets less current liabilities [abstract] | ||
| Assets less current liabilities |
8,929,000,000
USD
|
7,655,000,000
USD
|