| (US$ m) | Q1
2019 | Q4
2018 | Q3
2018 | Q2 2018 | Q1 2018 |
| Net cash from operating activities | 341 | 656 | 373 | 360 | 455 |
| Net cash used in investing activities | (408) | (284) | (152) | (401) | (374) |
| Payment for purchase and proceeds from sale of marketable securities, and investment in short-term deposits | - | (9) | (107) | 1 | 14 |
| Free cash flow | (67) | 363 | 114 | (40) | 95 |
Attachment
