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Net Finance Costs - Summary of Net Finance Costs (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Interest expense using the effective interest rate method: |  |  |
Interest on bank loans, overdrafts and all other borrowings | $ 1,296 | $ 1,168 | $ 1,130
Interest capitalised at 4.96% (2018: 4.24%; 2017: 3.25%) (1) | (248) | (139) | (113)
Interest on finance leases | 47 | 59 | 33
Discounting on provisions and other liabilities | 470 | 414 | 450
Other gains and losses |  |  |
Fair value change on hedged loans | 729 | (265) | (1,185)
Fair value change on hedging derivatives | (809) | 329 | 1,244
Exchange variations on net debt | 6 | (19) | (23)
Other | 19 | 20 | 24
Total financial expenses | 1,510 | 1,567 | 1,560
Financial income |  |  |
Interest income | (446) | (322) | (143)
Net finance costs | $ 1,064 | $ 1,245 | $ 1,417

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- Definition The amount of costs associated with financing activities of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 82 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_82_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The gain (loss) on the change in fair value of the hedged item used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 24B -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_24B_a_iv&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 24B -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_24B_b_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of interest costs that an entity incurs in connection with the borrowing of funds that are directly attributable to the acquisition, construction or production of a qualifying asset and which form part of the cost of that asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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