Statement Of Changes In Equity [Abstract]
| Concept |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||
| Statement of changes in equity [line items] | ||||||||||||
| Increase (decrease) through acquisition of subsidiary, equity | — | — | — | — | — | — |
90,000,000
USD
|
163,000,000
USD
|
— |
253,000,000
USD
|
— |
253,000,000
USD
|
| Decrease (increase) through tax on share-based payment transactions, equity | — | — | — | — | — | — | — | — |
2,000,000
USD
|
2,000,000
USD
|
— |
2,000,000
USD
|
| Increase (decrease) through transactions with owners, equity |
432,000,000
USD
|
2,000,000
USD
|
24,000,000
USD
|
333,000,000
USD
|
123,000,000
USD
|
434,000,000
USD
|
177,000,000
USD
|
182,000,000
USD
|
434,000,000
USD
|
48,000,000
USD
|
27,000,000
USD
|
75,000,000
USD
|
| Purchase of treasury shares |
111,000,000
USD
|
— | — | — |
111,000,000
USD
|
111,000,000
USD
|
— | — | — | — | — | — |