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Net Finance Costs - Summary of Net Finance Costs (Detail) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Jun. 30, 2022
Interest expense using the effective interest rate method:      
Interest on bank loans, overdrafts and all other borrowings $ 487 $ 230 $ 491
Interest capitalised at 5.20% (31 December 2021: 2.48%; 30 June 2022: 2.90%) (114) (49) (113)
Interest on lease liabilities 62 63 119
Discounting on provisions and other liabilities 613 243 645
Other gains and losses:      
Fair value change on hedged loans (754) (245) (1,286)
Fair value change on hedging derivatives 659 218 1,277
Exchange variations on net debt (90) (83) (99)
Other     16
Total financial expenses 863 377 1,050
Financial income      
Interest income (211) (25) (81)
Net finance costs $ 652 $ 352 $ 969