Statement Of Financial Position [Abstract]
| Concept |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Right-of-use assets | — | — | — | — | — |
1,109,000,000
USD
|
— | — |
799,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Goodwill | — | — | — | — | — |
3,827,000,000
USD
|
— | — |
3,835,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — | — | — |
6,000,000
USD
|
— | — |
4,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners | — | — | — | — | — |
–
USD
|
— | — |
31,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — |
222,000,000
USD
|
— | — |
314,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — |
638,000,000
USD
|
— | — |
813,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — |
10,364,000,000
USD
|
— | — |
9,992,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — | — | — |
3,420,000,000
USD
|
— | — |
3,420,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — |
3,436,000,000
USD
|
— | — |
2,975,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — | — |
3,354,000,000
USD
|
— | — |
2,990,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — |
3,502,000,000
USD
|
— | — |
3,405,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — |
147,000,000
USD
|
— | — |
52,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
2,412,000,000
USD
|
942,000,000
USD
|
3,502,000,000
USD
|
3,420,000,000
USD
|
3,436,000,000
USD
|
3,649,000,000
USD
|
147,000,000
USD
|
2,975,000,000
USD
|
3,353,000,000
USD
|
3,420,000,000
USD
|
52,000,000
USD
|
3,405,000,000
USD
|
594,000,000
USD
|
2,396,000,000
USD
|
107,000,000
USD
|
3,388,000,000
USD
|
2,252,000,000
USD
|
585,000,000
USD
|
3,281,000,000
USD
|
3,420,000,000
USD
|
2,805,000,000
USD
|
| Liabilities [abstract] | |||||||||||||||||||||
| Deferred tax liabilities | — | — | — | — | — |
114,000,000
USD
|
— | — |
81,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities included in disposal groups classified as held for sale | — | — | — | — | — |
–
USD
|
— | — |
19,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — |
6,715,000,000
USD
|
— | — |
6,639,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |