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Employee Benefits, Restructuring and Post-retirement Employee Benefits Provisions - Summary of Reconciliation of Employee Benefits, Restructuring and Post-retirement Employee Benefits (Detail) $ in Millions | 12 Months Ended
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Jun. 30, 2018 USD ($)
Disclosure of employee benefits restructuring and post retirement employee benefits provisions [Line Items] |
At the beginning of the financial year | $ 1,625
Charge/(credit) for the year: |
Underlying | 1,101
Discounting | 34
Net interest expense | (15)
Exchange variations | (24)
Released during the year | (32)
Remeasurement gains taken to retained earnings | (1)
Utilisation | (999)
At the end of the financial year | 1,689
Employee benefits [member] |
Disclosure of employee benefits restructuring and post retirement employee benefits provisions [Line Items] |
At the beginning of the financial year | 1,177
Charge/(credit) for the year: |
Underlying | 1,073
Exchange variations | (29)
Released during the year | (31)
Utilisation | (958)
At the end of the financial year | 1,232
Restructuring [member] |
Disclosure of employee benefits restructuring and post retirement employee benefits provisions [Line Items] |
At the beginning of the financial year | 10
Charge/(credit) for the year: |
Underlying | 6
Released during the year | (1)
Utilisation | (7)
At the end of the financial year | 8
Post-retirement employee benefits [member] |
Disclosure of employee benefits restructuring and post retirement employee benefits provisions [Line Items] |
At the beginning of the financial year | 438
Charge/(credit) for the year: |
Underlying | 22
Discounting | 34
Net interest expense | (15)
Exchange variations | 5
Remeasurement gains taken to retained earnings | (1)
Utilisation | (34)
At the end of the financial year | $ 449

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