Windfall Tax on Gas Exports, page-11

The Oil & Gas corporations (mostly foreign owned) are extra prosperous
in Australia (we just love Haustralia) because they are allowed to agressively avoid Tax.

RE: The BHP/WPL merger:

BHP is 92% foreign owned and WPL is 84% foreign owned
so with all probability the merged entity will be on average
90% foreign owned with that %age of profits going overseas.

https://www.news.com.au/finance/business/us-ownership-of-australias-biggest-companies/news-story/5e0361d3e4433be0c4c1c40c8254cac1

This was for 2016 and in the interim, foreign ownership has increased of both entities, IMO.