Statement Of Comprehensive Income [Abstract]
| Concept |
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 |
2019-04-01 to 2020-03-31 |
2019-04-01 to 2020-03-31 |
2019-04-01 to 2020-03-31 |
2019-04-01 to 2020-03-31 |
2019-04-01 to 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||
| Profit (loss) | — |
803,000,000
USD
|
802,000,000
USD
|
1,000,000
USD
|
803,000,000
USD
|
2,000,000
USD
|
675,000,000
USD
|
675,000,000
USD
|
677,000,000
USD
|
— |
| Other comprehensive income [abstract] | ||||||||||
| Other comprehensive income that will not be reclassified to profit or loss, net of tax | — | — |
12,000,000
USD
|
— | — | — | — | — |
15,000,000
USD
|
— |
| Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] | ||||||||||
| Exchange differences on translation [abstract] | ||||||||||
| Gains (losses) on exchange differences on translation of foreign operations, net of tax | — | — |
70,000,000
USD
|
— | — | — | — | — |
313,000,000
USD
|
— |
| Cash flow hedges [abstract] | ||||||||||
| Gains (losses) on cash flow hedges, net of tax | — | — |
35,000,000
USD
|
— | — | — | — | — |
—
USD
|
— |
| Reclassification adjustments on cash flow hedges, net of tax | — | — |
33,000,000
USD
|
— | — | — | — | — |
—
USD
|
— |
| Other comprehensive income that will be reclassified to profit or loss, net of tax | — | — |
72,000,000
USD
|
— | — | — | — | — |
313,000,000
USD
|
— |
| Other comprehensive income |
66,000,000
USD
|
12,000,000
USD
|
84,000,000
USD
|
6,000,000
USD
|
78,000,000
USD
|
1,000,000
USD
|
297,000,000
USD
|
15,000,000
USD
|
298,000,000
USD
|
312,000,000
USD
|
| Comprehensive income |
66,000,000
USD
|
815,000,000
USD
|
886,000,000
USD
|
5,000,000
USD
|
881,000,000
USD
|
1,000,000
USD
|
378,000,000
USD
|
690,000,000
USD
|
379,000,000
USD
|
312,000,000
USD
|
| Comprehensive income attributable to [abstract] | ||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
881,000,000
USD
|
— | — | — | — | — |
378,000,000
USD
|
— |
| Comprehensive income, attributable to non-controlling interests | — | — |
5,000,000
USD
|
— | — | — | — | — |
1,000,000
USD
|
— |