Analysis Of Income And Expense [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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||
| Revenue [abstract] | ||||||||||
| Revenue | — | — |
5,372,000,000
USD
|
— | — | — | — | — |
5,179,000,000
USD
|
— |
| Material income and expense [abstract] | ||||||||||
| Gains (losses) on disposals of investments [abstract] | ||||||||||
| Gains on disposals of investments | — | — |
120,000,000
USD
|
— | — | — | — | — |
—
USD
|
— |
| Sales and marketing expense | — | — |
417,000,000
USD
|
— | — | — | — | — |
378,000,000
USD
|
— |
| Expenses by nature [abstract] | ||||||||||
| Classes of employee benefits expense [abstract] | ||||||||||
| Employee benefits expense | — | — |
1,995,000,000
USD
|
— | — | — | — | — |
1,872,000,000
USD
|
— |
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||
| Depreciation and amortisation expense [abstract] | ||||||||||
| Depreciation and amortisation expense | — | — |
591,000,000
USD
|
— | — | — | — | — |
537,000,000
USD
|
— |
| Other expenses, by nature | — | — |
445,000,000
USD
|
— | — | — | — | — |
454,000,000
USD
|
— |
| Expenses, by nature | — | — |
4,309,000,000
USD
|
— | — | — | — | — |
3,994,000,000
USD
|
— |
| Disclosure of attribution of expenses by nature to their function [text block] | — | — | — | — | — | — | — | — | — | — |
| Disclosure of attribution of expenses by nature to their function [abstract] | ||||||||||
| Disclosure of attribution of expenses by nature to their function [line items] | ||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||
| Share of profit (loss) of associates accounted for using equity method | — | — |
21,000,000
USD
|
— | — | — | — | — |
14,000,000
USD
|
— |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||
| 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 owners of parent, continuing and discontinued operations [abstract] | ||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
881,000,000
USD
|
— | — | — | — | — |
378,000,000
USD
|
— |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — |
5,000,000
USD
|
— | — | — | — | — |
1,000,000
USD
|
— |