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Net Debt - Summary of Maturity Profile of Financial Liabilities Based on the Contractual Amounts (Detail) - USD ($) $ in Millions | Jun. 30, 2021 | Jun. 30, 2020
--- | --- | ---
Disclosure of financial liabilities [line items] |  |
Bank loans, debentures and other loans, contractual amount | $ 15,863 | $ 21,631
Expected future interest payments, contractual amount | 7,018 | 7,596
Derivatives related to debentures, contractual amount | 1,169 | 2,134
Other derivatives, contractual amount | 786 | 60
Obligations under lease liabilities, contractual amount | 4,899 | 3,935
Total, contractual amount | 36,586 | 40,979
Bank loans, debentures and other loans, carrying amount | 17,087 | 23,605
Derivatives related to debentures, carrying amount | 586 | 1,579
Other derivatives, carrying amount | 690 | 60
Obligations under lease liabilities, carrying amount | 3,896 | 3,443
Trade and other payables, carrying amount | 6,851 | 5,623
Total financial liabilities | 29,110 | 34,310
Due not later than one year [member] |  |
Disclosure of financial liabilities [line items] |  |
Bank loans, debentures and other loans, contractual amount | 1,722 | 4,138
Expected future interest payments, contractual amount | 729 | 813
Derivatives related to debentures, contractual amount | 61 | 260
Other derivatives, contractual amount | 149 | 60
Obligations under lease liabilities, contractual amount | 980 | 927
Total, contractual amount | 10,492 | 11,820
Trade and other payables, carrying amount | 6,851 | 5,622
Later than one year and not later than two years [member] |  |
Disclosure of financial liabilities [line items] |  |
Bank loans, debentures and other loans, contractual amount | 2,278 | 1,665
Expected future interest payments, contractual amount | 661 | 702
Derivatives related to debentures, contractual amount | 267 | 81
Other derivatives, contractual amount | 80 |
Obligations under lease liabilities, contractual amount | 680 | 630
Total, contractual amount | 3,966 | 3,079
Trade and other payables, carrying amount |  | 1
Later than two years and not later than five years [member] |  |
Disclosure of financial liabilities [line items] |  |
Bank loans, debentures and other loans, contractual amount | 4,062 | 5,727
Expected future interest payments, contractual amount | 1,492 | 1,713
Derivatives related to debentures, contractual amount | 256 | 819
Other derivatives, contractual amount | 240 |
Obligations under lease liabilities, contractual amount | 1,397 | 1,335
Total, contractual amount | 7,447 | 9,594
Due later than five years [member] |  |
Disclosure of financial liabilities [line items] |  |
Bank loans, debentures and other loans, contractual amount | 7,801 | 10,101
Expected future interest payments, contractual amount | 4,136 | 4,368
Derivatives related to debentures, contractual amount | 585 | 974
Other derivatives, contractual amount | 317 |
Obligations under lease liabilities, contractual amount | 1,842 | 1,043
Total, contractual amount | $ 14,681 | $ 16,486

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