Statement Of Changes In Equity [Abstract]
| Concept |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 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 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||
| Equity |
2,758,000,000
USD
|
— |
215,000,000
USD
|
— | — |
3,635,000,000
USD
|
3,808,000,000
USD
|
3,420,000,000
USD
|
— | — | — |
173,000,000
USD
|
3,902,000,000
USD
|
— | — |
929,000,000
USD
|
— |
2,412,000,000
USD
|
— |
942,000,000
USD
|
— |
82,000,000
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
|
15,000,000
USD
|
52,000,000
USD
|
3,405,000,000
USD
|
594,000,000
USD
|
2,396,000,000
USD
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
–
USD
|
— |
663,000,000
USD
|
663,000,000
USD
|
— | — | — |
87,000,000
USD
|
–
USD
|
663,000,000
USD
|
— | — |
–
USD
|
750,000,000
USD
|
— |
631,000,000
USD
|
— |
124,000,000
USD
|
— |
631,000,000
USD
|
— |
–
USD
|
— | — | — |
–
USD
|
755,000,000
USD
|
— |
–
USD
|
631,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income | — |
–
USD
|
— |
341,000,000
USD
|
341,000,000
USD
|
— | — | — |
12,000,000
USD
|
–
USD
|
0
USD
|
— | — |
341,000,000
USD
|
353,000,000
USD
|
— |
12,000,000
USD
|
— |
2,000,000
USD
|
— |
0
USD
|
— |
–
USD
|
— | — | — |
12,000,000
USD
|
14,000,000
USD
|
— |
–
USD
|
12,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
–
USD
|
— |
322,000,000
USD
|
322,000,000
USD
|
— | — | — |
75,000,000
USD
|
–
USD
|
663,000,000
USD
|
— | — |
341,000,000
USD
|
397,000,000
USD
|
— |
619,000,000
USD
|
— |
122,000,000
USD
|
— |
631,000,000
USD
|
— |
–
USD
|
— | — | — |
12,000,000
USD
|
741,000,000
USD
|
— |
–
USD
|
619,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity | — |
13,000,000
USD
|
— |
13,000,000
USD
|
13,000,000
USD
|
— | — | — |
3,000,000
USD
|
–
USD
|
–
USD
|
— | — |
–
USD
|
16,000,000
USD
|
— |
349,000,000
USD
|
— |
153,000,000
USD
|
— |
–
USD
|
— |
–
USD
|
— | — | — |
1,000,000
USD
|
196,000,000
USD
|
— |
348,000,000
USD
|
349,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
–
USD
|
— |
4,000,000
USD
|
4,000,000
USD
|
— | — | — |
–
USD
|
–
USD
|
2,000,000
USD
|
— | — |
6,000,000
USD
|
4,000,000
USD
|
— |
2,000,000
USD
|
— |
–
USD
|
— |
1,000,000
USD
|
— |
–
USD
|
— | — | — |
3,000,000
USD
|
2,000,000
USD
|
— |
–
USD
|
2,000,000
USD
|
— | — | — | — | — | — | — | — | — |