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Post-retirement benefit obligations - Reconciliation, projected net pension liability (Details) - ZAR (R) R in Millions | 12 Months Ended |
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
Disclosure of net defined benefit liability (asset) |  |  |
Pension asset | R 633 | R 591 |
Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 6,179 | 9,490 |
Pension asset | 633 | 591 |
Benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 70,508 | 70,322 | R 63,549
Benefit obligation | Funded benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 63,696 | 60,294 |
Benefit obligation | Funded benefit obligation | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 32,787 | 28,359 |
Benefit obligation | Funded benefit obligation | Pension - Defined benefit option |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 30,909 | 31,935 |
Benefit obligation | Unfunded benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 6,812 | 10,028 |
Plan assets | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | (70,071) | (64,403) | (55,120)
Plan assets | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | (39,162) | (32,468) |
Plan assets | Pension - Defined benefit option |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | (30,909) | (31,935) |
Asset ceiling | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 5,742 | 3,571 |
Increase in asset limitation | 1,775 | 291 |
Interest expense (income) | 396 | 357 |
South Africa | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | (64) | (46) |
Pension asset | 64 | 46 |
South Africa | Benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 60,478 | 57,054 | 47,228
South Africa | Benefit obligation | Funded benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 60,478 | 57,054 |
South Africa | Benefit obligation | Funded benefit obligation | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 29,569 | 25,119 |
South Africa | Benefit obligation | Funded benefit obligation | Pension - Defined benefit option |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 30,909 | 31,935 |
South Africa | Plan assets | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | (66,284) | (60,671) | (50,618)
South Africa | Plan assets | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | (35,375) | (28,736) |
South Africa | Plan assets | Pension - Defined benefit option |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | (30,909) | (31,935) |
South Africa | Asset ceiling | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 5,742 | 3,571 |
Foreign Countries | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 6,243 | 9,536 |
Pension asset | 569 | 545 |
Foreign Countries | Benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 10,030 | 13,268 | 16,321
Foreign Countries | Benefit obligation | Funded benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 3,218 | 3,240 |
Foreign Countries | Benefit obligation | Funded benefit obligation | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 3,218 | 3,240 |
Foreign Countries | Benefit obligation | Unfunded benefit obligation | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | 6,812 | 10,028 |
Foreign Countries | Plan assets | Pension |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | (3,787) | (3,732) | R (4,502)
Foreign Countries | Plan assets | Pension - Defined benefit portion |  |  |
Disclosure of net defined benefit liability (asset) |  |  |
Net pension obligations, Total | R (3,787) | R (3,732) |

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