The media giant and Country Music trade association have pledged $10m and $1m, respectively.
After signing the paperwork back in December, the €3bn deal for a 10% stake has now closed.
The funds will be given as three $100,000 donations to two arts-related charities and a food bank in Las Vegas.
The former politician will officially take up the role in April, with plans to first tackle the COVID-19 fallout.
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