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Net Finance Costs - Summary of Net Finance Costs (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Financial expenses |  |  |
Interest on bank loans, overdrafts and all other borrowings | $ 1,168 | $ 1,130 | $ 969
Interest capitalised at 4.24% (2017: 3.25%; 2016: 2.61%) | (139) | (113) | (123)
Discounting on provisions and other liabilities | 414 | 450 | 304
Fair value change on hedged loans | (265) | (1,185) | 1,444
Fair value change on hedging derivatives | 329 | 1,244 | (1,448)
Exchange variations on net debt | (19) | (23) | (24)
Other financial expenses | 79 | 57 | 28
Finance costs | 1,567 | 1,560 | 1,150
Financial income |  |  |
Interest income | (322) | (143) | (137)
Net finance costs | $ 1,245 | $ 1,417 | $ 1,013

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